21681452

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7867}}^1$

素因数の和:7937

約数の個数: 24

約数和(自身を含む): 41637456

約数和(自身を除く): 19956004

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7867, 15734, 31468, 102271, 204542, 409084, 416951, 833902, 1667804, 5420363, 10840726, 21681452]

約数ペア:

[(1, 21681452), (2, 10840726), (4, 5420363), (13, 1667804), (26, 833902), (52, 416951), (53, 409084), (106, 204542), (212, 102271), (689, 31468), (1378, 15734), (2756, 7867)]