21261873

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{577}}^1$

素因数の和:824

約数の個数: 16

約数和(自身を含む): 28964736

約数和(自身を除く): 7702863

約数列:

[1, 3, 71, 173, 213, 519, 577, 1731, 12283, 36849, 40967, 99821, 122901, 299463, 7087291, 21261873]

約数ペア:

[(1, 21261873), (3, 7087291), (71, 299463), (173, 122901), (213, 99821), (519, 40967), (577, 36849), (1731, 12283)]