21095526140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{81136639}}^1$

素因数の和:81136661

約数の個数: 24

約数和(自身を含む): 47708344320

約数和(自身を除く): 26612818180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 81136639, 162273278, 324546556, 405683195, 811366390, 1054776307, 1622732780, 2109552614, 4219105228, 5273881535, 10547763070, 21095526140]

約数ペア:

[(1, 21095526140), (2, 10547763070), (4, 5273881535), (5, 4219105228), (10, 2109552614), (13, 1622732780), (20, 1054776307), (26, 811366390), (52, 405683195), (65, 324546556), (130, 162273278), (260, 81136639)]