21090212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{36871}}^1$

素因数の和:36899

約数の個数: 24

約数和(自身を含む): 43361472

約数和(自身を除く): 22271260

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 572, 36871, 73742, 147484, 405581, 479323, 811162, 958646, 1622324, 1917292, 5272553, 10545106, 21090212]

約数ペア:

[(1, 21090212), (2, 10545106), (4, 5272553), (11, 1917292), (13, 1622324), (22, 958646), (26, 811162), (44, 479323), (52, 405581), (143, 147484), (286, 73742), (572, 36871)]