688457080

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1\times {\mathrm{587}}^1$

素因数の和:976

約数の個数: 64

約数和(自身を含む): 1571724000

約数和(自身を除く): 883266920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 269, 436, 538, 545, 587, 872, 1076, 1090, 1174, 1345, 2152, 2180, 2348, 2690, 2935, 4360, 4696, 5380, 5870, 10760, 11740, 23480, 29321, 58642, 63983, 117284, 127966, 146605, 157903, 234568, 255932, 293210, 315806, 319915, 511864, 586420, 631612, 639830, 789515, 1172840, 1263224, 1279660, 1579030, 2559320, 3158060, 6316120, 17211427, 34422854, 68845708, 86057135, 137691416, 172114270, 344228540, 688457080]

約数ペア:

[(1, 688457080), (2, 344228540), (4, 172114270), (5, 137691416), (8, 86057135), (10, 68845708), (20, 34422854), (40, 17211427), (109, 6316120), (218, 3158060), (269, 2559320), (436, 1579030), (538, 1279660), (545, 1263224), (587, 1172840), (872, 789515), (1076, 639830), (1090, 631612), (1174, 586420), (1345, 511864), (2152, 319915), (2180, 315806), (2348, 293210), (2690, 255932), (2935, 234568), (4360, 157903), (4696, 146605), (5380, 127966), (5870, 117284), (10760, 63983), (11740, 58642), (23480, 29321)]