21296540

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{3217}}^1$

素因数の和:3557

約数の個数: 24

約数和(自身を含む): 44871792

約数和(自身を除く): 23575252

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3217, 3310, 6434, 6620, 12868, 16085, 32170, 64340, 1064827, 2129654, 4259308, 5324135, 10648270, 21296540]

約数ペア:

[(1, 21296540), (2, 10648270), (4, 5324135), (5, 4259308), (10, 2129654), (20, 1064827), (331, 64340), (662, 32170), (1324, 16085), (1655, 12868), (3217, 6620), (3310, 6434)]