491569480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{396427}}^1$

素因数の和:396469

約数の個数: 32

約数和(自身を含む): 1141712640

約数和(自身を除く): 650143160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 396427, 792854, 1585708, 1982135, 3171416, 3964270, 7928540, 12289237, 15857080, 24578474, 49156948, 61446185, 98313896, 122892370, 245784740, 491569480]

約数ペア:

[(1, 491569480), (2, 245784740), (4, 122892370), (5, 98313896), (8, 61446185), (10, 49156948), (20, 24578474), (31, 15857080), (40, 12289237), (62, 7928540), (124, 3964270), (155, 3171416), (248, 1982135), (310, 1585708), (620, 792854), (1240, 396427)]