20827040

素因数分解:

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

素因数の和:95

約数の個数: 192

約数和(自身を含む): 60963840

約数和(自身を除く): 40136800

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, 988, 992, 1040, 1054, 1105, 1178, 1235, 1240, 1292, 1360, 1520, 1612, 1615, 1768, 1976, 2015, 2080, 2108, 2210, 2356, 2470, 2480, 2584, 2635, 2720, 2945, 3040, 3224, 3230, 3536, 3952, 4030, 4199, 4216, 4420, 4712, 4940, 4960, 5168, 5270, 5890, 6448, 6460, 6851, 7072, 7657, 7904, 8060, 8398, 8432, 8840, 9424, 9880, 10013, 10336, 10540, 11780, 12896, 12920, 13702, 15314, 16120, 16796, 16864, 17680, 18848, 19760, 20026, 20995, 21080, 23560, 25840, 27404, 30628, 32240, 33592, 34255, 35360, 38285, 39520, 40052, 41990, 42160, 47120, 50065, 51680, 54808, 61256, 64480, 67184, 68510, 76570, 80104, 83980, 84320, 94240, 100130, 109616, 122512, 130169, 134368, 137020, 153140, 160208, 167960, 200260, 219232, 245024, 260338, 274040, 306280, 320416, 335920, 400520, 520676, 548080, 612560, 650845, 671840, 801040, 1041352, 1096160, 1225120, 1301690, 1602080, 2082704, 2603380, 4165408, 5206760, 10413520, 20827040]

約数ペア:

[(1, 20827040), (2, 10413520), (4, 5206760), (5, 4165408), (8, 2603380), (10, 2082704), (13, 1602080), (16, 1301690), (17, 1225120), (19, 1096160), (20, 1041352), (26, 801040), (31, 671840), (32, 650845), (34, 612560), (38, 548080), (40, 520676), (52, 400520), (62, 335920), (65, 320416), (68, 306280), (76, 274040), (80, 260338), (85, 245024), (95, 219232), (104, 200260), (124, 167960), (130, 160208), (136, 153140), (152, 137020), (155, 134368), (160, 130169), (170, 122512), (190, 109616), (208, 100130), (221, 94240), (247, 84320), (248, 83980), (260, 80104), (272, 76570), (304, 68510), (310, 67184), (323, 64480), (340, 61256), (380, 54808), (403, 51680), (416, 50065), (442, 47120), (494, 42160), (496, 41990), (520, 40052), (527, 39520), (544, 38285), (589, 35360), (608, 34255), (620, 33592), (646, 32240), (680, 30628), (760, 27404), (806, 25840), (884, 23560), (988, 21080), (992, 20995), (1040, 20026), (1054, 19760), (1105, 18848), (1178, 17680), (1235, 16864), (1240, 16796), (1292, 16120), (1360, 15314), (1520, 13702), (1612, 12920), (1615, 12896), (1768, 11780), (1976, 10540), (2015, 10336), (2080, 10013), (2108, 9880), (2210, 9424), (2356, 8840), (2470, 8432), (2480, 8398), (2584, 8060), (2635, 7904), (2720, 7657), (2945, 7072), (3040, 6851), (3224, 6460), (3230, 6448), (3536, 5890), (3952, 5270), (4030, 5168), (4199, 4960), (4216, 4940), (4420, 4712)]