688487680

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17351}}^1$

素因数の和:17403

約数の個数: 72

約数和(自身を含む): 1702439424

約数和(自身を除く): 1013951744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 17351, 19840, 34702, 39680, 69404, 86755, 138808, 173510, 277616, 347020, 537881, 555232, 694040, 1075762, 1110464, 1388080, 2151524, 2220928, 2689405, 2776160, 4303048, 4441856, 5378810, 5552320, 8606096, 10757620, 11104640, 17212192, 21515240, 22209280, 34424384, 43030480, 68848768, 86060960, 137697536, 172121920, 344243840, 688487680]

約数ペア:

[(1, 688487680), (2, 344243840), (4, 172121920), (5, 137697536), (8, 86060960), (10, 68848768), (16, 43030480), (20, 34424384), (31, 22209280), (32, 21515240), (40, 17212192), (62, 11104640), (64, 10757620), (80, 8606096), (124, 5552320), (128, 5378810), (155, 4441856), (160, 4303048), (248, 2776160), (256, 2689405), (310, 2220928), (320, 2151524), (496, 1388080), (620, 1110464), (640, 1075762), (992, 694040), (1240, 555232), (1280, 537881), (1984, 347020), (2480, 277616), (3968, 173510), (4960, 138808), (7936, 86755), (9920, 69404), (17351, 39680), (19840, 34702)]