80856620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{310987}}^1$

素因数の和:311009

約数の個数: 24

約数和(自身を含む): 182860944

約数和(自身を除く): 102004324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 310987, 621974, 1243948, 1554935, 3109870, 4042831, 6219740, 8085662, 16171324, 20214155, 40428310, 80856620]

約数ペア:

[(1, 80856620), (2, 40428310), (4, 20214155), (5, 16171324), (10, 8085662), (13, 6219740), (20, 4042831), (26, 3109870), (52, 1554935), (65, 1243948), (130, 621974), (260, 310987)]