21795201

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 32747520

約数和(自身を除く): 10952319

約数列:

[1, 3, 9, 31, 93, 191, 279, 409, 573, 1227, 1719, 3681, 5921, 12679, 17763, 38037, 53289, 78119, 114111, 234357, 703071, 2421689, 7265067, 21795201]

約数ペア:

[(1, 21795201), (3, 7265067), (9, 2421689), (31, 703071), (93, 234357), (191, 114111), (279, 78119), (409, 53289), (573, 38037), (1227, 17763), (1719, 12679), (3681, 5921)]