21354580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3571}}^1$

素因数の和:3616

約数の個数: 48

約数和(自身を含む): 50408064

約数和(自身を除く): 29053484

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3571, 5980, 7142, 14284, 17855, 35710, 46423, 71420, 82133, 92846, 164266, 185692, 232115, 328532, 410665, 464230, 821330, 928460, 1067729, 1642660, 2135458, 4270916, 5338645, 10677290, 21354580]

約数ペア:

[(1, 21354580), (2, 10677290), (4, 5338645), (5, 4270916), (10, 2135458), (13, 1642660), (20, 1067729), (23, 928460), (26, 821330), (46, 464230), (52, 410665), (65, 328532), (92, 232115), (115, 185692), (130, 164266), (230, 92846), (260, 82133), (299, 71420), (460, 46423), (598, 35710), (1196, 17855), (1495, 14284), (2990, 7142), (3571, 5980)]