21247820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96581}}^1$

素因数の和:96601

約数の個数: 24

約数和(自身を含む): 48677328

約数和(自身を除く): 27429508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96581, 193162, 386324, 482905, 965810, 1062391, 1931620, 2124782, 4249564, 5311955, 10623910, 21247820]

約数ペア:

[(1, 21247820), (2, 10623910), (4, 5311955), (5, 4249564), (10, 2124782), (11, 1931620), (20, 1062391), (22, 965810), (44, 482905), (55, 386324), (110, 193162), (220, 96581)]