640030960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:144

約数の個数: 240

約数和(自身を含む): 1754173440

約数和(自身を除く): 1114142480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 31, 34, 38, 40, 47, 62, 68, 76, 80, 85, 94, 95, 124, 136, 152, 155, 170, 188, 190, 235, 248, 272, 289, 304, 310, 323, 340, 376, 380, 470, 496, 527, 578, 589, 620, 646, 680, 752, 760, 799, 893, 940, 1054, 1156, 1178, 1240, 1292, 1360, 1445, 1457, 1520, 1598, 1615, 1786, 1880, 2108, 2312, 2356, 2480, 2584, 2635, 2890, 2914, 2945, 3196, 3230, 3572, 3760, 3995, 4216, 4465, 4624, 4712, 5168, 5270, 5491, 5780, 5828, 5890, 6392, 6460, 7144, 7285, 7990, 8432, 8930, 8959, 9424, 10013, 10540, 10982, 11560, 11656, 11780, 12784, 12920, 13583, 14288, 14570, 15181, 15980, 17860, 17918, 20026, 21080, 21964, 23120, 23312, 23560, 24769, 25840, 27166, 27455, 27683, 29140, 30362, 31960, 35720, 35836, 40052, 42160, 43928, 44795, 47120, 49538, 50065, 54332, 54910, 55366, 58280, 60724, 63920, 67915, 71440, 71672, 75905, 80104, 87856, 89590, 99076, 100130, 108664, 109820, 110732, 116560, 121448, 123845, 135830, 138415, 143344, 151810, 160208, 170221, 179180, 198152, 200260, 217328, 219640, 221464, 242896, 247690, 258077, 271660, 276830, 303620, 340442, 358360, 396304, 400520, 421073, 439280, 442928, 470611, 495380, 516154, 543320, 553660, 607240, 680884, 716720, 801040, 842146, 851105, 941222, 990760, 1032308, 1086640, 1107320, 1214480, 1290385, 1361768, 1684292, 1702210, 1882444, 1981520, 2064616, 2105365, 2214640, 2353055, 2580770, 2723536, 3368584, 3404420, 3764888, 4129232, 4210730, 4706110, 5161540, 6737168, 6808840, 7529776, 8000387, 8421460, 9412220, 10323080, 13617680, 16000774, 16842920, 18824440, 20646160, 32001548, 33685840, 37648880, 40001935, 64003096, 80003870, 128006192, 160007740, 320015480, 640030960]

約数ペア:

[(1, 640030960), (2, 320015480), (4, 160007740), (5, 128006192), (8, 80003870), (10, 64003096), (16, 40001935), (17, 37648880), (19, 33685840), (20, 32001548), (31, 20646160), (34, 18824440), (38, 16842920), (40, 16000774), (47, 13617680), (62, 10323080), (68, 9412220), (76, 8421460), (80, 8000387), (85, 7529776), (94, 6808840), (95, 6737168), (124, 5161540), (136, 4706110), (152, 4210730), (155, 4129232), (170, 3764888), (188, 3404420), (190, 3368584), (235, 2723536), (248, 2580770), (272, 2353055), (289, 2214640), (304, 2105365), (310, 2064616), (323, 1981520), (340, 1882444), (376, 1702210), (380, 1684292), (470, 1361768), (496, 1290385), (527, 1214480), (578, 1107320), (589, 1086640), (620, 1032308), (646, 990760), (680, 941222), (752, 851105), (760, 842146), (799, 801040), (893, 716720), (940, 680884), (1054, 607240), (1156, 553660), (1178, 543320), (1240, 516154), (1292, 495380), (1360, 470611), (1445, 442928), (1457, 439280), (1520, 421073), (1598, 400520), (1615, 396304), (1786, 358360), (1880, 340442), (2108, 303620), (2312, 276830), (2356, 271660), (2480, 258077), (2584, 247690), (2635, 242896), (2890, 221464), (2914, 219640), (2945, 217328), (3196, 200260), (3230, 198152), (3572, 179180), (3760, 170221), (3995, 160208), (4216, 151810), (4465, 143344), (4624, 138415), (4712, 135830), (5168, 123845), (5270, 121448), (5491, 116560), (5780, 110732), (5828, 109820), (5890, 108664), (6392, 100130), (6460, 99076), (7144, 89590), (7285, 87856), (7990, 80104), (8432, 75905), (8930, 71672), (8959, 71440), (9424, 67915), (10013, 63920), (10540, 60724), (10982, 58280), (11560, 55366), (11656, 54910), (11780, 54332), (12784, 50065), (12920, 49538), (13583, 47120), (14288, 44795), (14570, 43928), (15181, 42160), (15980, 40052), (17860, 35836), (17918, 35720), (20026, 31960), (21080, 30362), (21964, 29140), (23120, 27683), (23312, 27455), (23560, 27166), (24769, 25840)]