639705664

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{26513}}^1$

素因数の和:26567

約数の個数: 56

約数和(自身を含む): 1414256760

約数和(自身を除く): 774551096

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 64, 104, 116, 208, 232, 377, 416, 464, 754, 832, 928, 1508, 1856, 3016, 6032, 12064, 24128, 26513, 53026, 106052, 212104, 344669, 424208, 689338, 768877, 848416, 1378676, 1537754, 1696832, 2757352, 3075508, 5514704, 6151016, 9995401, 11029408, 12302032, 19990802, 22058816, 24604064, 39981604, 49208128, 79963208, 159926416, 319852832, 639705664]

約数ペア:

[(1, 639705664), (2, 319852832), (4, 159926416), (8, 79963208), (13, 49208128), (16, 39981604), (26, 24604064), (29, 22058816), (32, 19990802), (52, 12302032), (58, 11029408), (64, 9995401), (104, 6151016), (116, 5514704), (208, 3075508), (232, 2757352), (377, 1696832), (416, 1537754), (464, 1378676), (754, 848416), (832, 768877), (928, 689338), (1508, 424208), (1856, 344669), (3016, 212104), (6032, 106052), (12064, 53026), (24128, 26513)]