645638240

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:126

約数の個数: 288

約数和(自身を含む): 1891784160

約数和(自身を除く): 1246145920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 19, 20, 26, 31, 32, 34, 38, 40, 52, 62, 65, 68, 76, 80, 85, 95, 104, 124, 130, 136, 152, 155, 160, 170, 190, 208, 221, 247, 248, 260, 272, 304, 310, 323, 340, 380, 403, 416, 442, 494, 496, 520, 527, 544, 589, 608, 620, 646, 680, 760, 806, 884, 961, 988, 992, 1040, 1054, 1105, 1178, 1235, 1240, 1292, 1360, 1520, 1612, 1615, 1768, 1922, 1976, 2015, 2080, 2108, 2210, 2356, 2470, 2480, 2584, 2635, 2720, 2945, 3040, 3224, 3230, 3536, 3844, 3952, 4030, 4199, 4216, 4420, 4712, 4805, 4940, 4960, 5168, 5270, 5890, 6448, 6460, 6851, 7072, 7657, 7688, 7904, 8060, 8398, 8432, 8840, 9424, 9610, 9880, 10013, 10336, 10540, 11780, 12493, 12896, 12920, 13702, 15314, 15376, 16120, 16337, 16796, 16864, 17680, 18259, 18848, 19220, 19760, 20026, 20995, 21080, 23560, 24986, 25840, 27404, 30628, 30752, 32240, 32674, 33592, 34255, 35360, 36518, 38285, 38440, 39520, 40052, 41990, 42160, 47120, 49972, 50065, 51680, 54808, 61256, 62465, 64480, 65348, 67184, 68510, 73036, 76570, 76880, 80104, 81685, 83980, 84320, 91295, 94240, 99944, 100130, 109616, 122512, 124930, 130169, 130696, 134368, 137020, 146072, 153140, 153760, 160208, 163370, 167960, 182590, 199888, 200260, 212381, 219232, 237367, 245024, 249860, 260338, 261392, 274040, 292144, 306280, 310403, 320416, 326740, 335920, 365180, 399776, 400520, 424762, 474734, 499720, 520676, 522784, 548080, 584288, 612560, 620806, 650845, 653480, 671840, 730360, 801040, 849524, 949468, 999440, 1041352, 1061905, 1096160, 1186835, 1225120, 1241612, 1301690, 1306960, 1460720, 1552015, 1602080, 1699048, 1898936, 1998880, 2082704, 2123810, 2373670, 2483224, 2603380, 2613920, 2921440, 3104030, 3398096, 3797872, 4035239, 4165408, 4247620, 4747340, 4966448, 5206760, 6208060, 6796192, 7595744, 8070478, 8495240, 9494680, 9932896, 10413520, 12416120, 16140956, 16990480, 18989360, 20176195, 20827040, 24832240, 32281912, 33980960, 37978720, 40352390, 49664480, 64563824, 80704780, 129127648, 161409560, 322819120, 645638240]

約数ペア:

[(1, 645638240), (2, 322819120), (4, 161409560), (5, 129127648), (8, 80704780), (10, 64563824), (13, 49664480), (16, 40352390), (17, 37978720), (19, 33980960), (20, 32281912), (26, 24832240), (31, 20827040), (32, 20176195), (34, 18989360), (38, 16990480), (40, 16140956), (52, 12416120), (62, 10413520), (65, 9932896), (68, 9494680), (76, 8495240), (80, 8070478), (85, 7595744), (95, 6796192), (104, 6208060), (124, 5206760), (130, 4966448), (136, 4747340), (152, 4247620), (155, 4165408), (160, 4035239), (170, 3797872), (190, 3398096), (208, 3104030), (221, 2921440), (247, 2613920), (248, 2603380), (260, 2483224), (272, 2373670), (304, 2123810), (310, 2082704), (323, 1998880), (340, 1898936), (380, 1699048), (403, 1602080), (416, 1552015), (442, 1460720), (494, 1306960), (496, 1301690), (520, 1241612), (527, 1225120), (544, 1186835), (589, 1096160), (608, 1061905), (620, 1041352), (646, 999440), (680, 949468), (760, 849524), (806, 801040), (884, 730360), (961, 671840), (988, 653480), (992, 650845), (1040, 620806), (1054, 612560), (1105, 584288), (1178, 548080), (1235, 522784), (1240, 520676), (1292, 499720), (1360, 474734), (1520, 424762), (1612, 400520), (1615, 399776), (1768, 365180), (1922, 335920), (1976, 326740), (2015, 320416), (2080, 310403), (2108, 306280), (2210, 292144), (2356, 274040), (2470, 261392), (2480, 260338), (2584, 249860), (2635, 245024), (2720, 237367), (2945, 219232), (3040, 212381), (3224, 200260), (3230, 199888), (3536, 182590), (3844, 167960), (3952, 163370), (4030, 160208), (4199, 153760), (4216, 153140), (4420, 146072), (4712, 137020), (4805, 134368), (4940, 130696), (4960, 130169), (5168, 124930), (5270, 122512), (5890, 109616), (6448, 100130), (6460, 99944), (6851, 94240), (7072, 91295), (7657, 84320), (7688, 83980), (7904, 81685), (8060, 80104), (8398, 76880), (8432, 76570), (8840, 73036), (9424, 68510), (9610, 67184), (9880, 65348), (10013, 64480), (10336, 62465), (10540, 61256), (11780, 54808), (12493, 51680), (12896, 50065), (12920, 49972), (13702, 47120), (15314, 42160), (15376, 41990), (16120, 40052), (16337, 39520), (16796, 38440), (16864, 38285), (17680, 36518), (18259, 35360), (18848, 34255), (19220, 33592), (19760, 32674), (20026, 32240), (20995, 30752), (21080, 30628), (23560, 27404), (24986, 25840)]