21118604

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8641}}^1$

素因数の和:8705

約数の個数: 24

約数和(自身を含む): 40651968

約数和(自身を除く): 19533364

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8641, 17282, 34564, 112333, 224666, 406127, 449332, 812254, 1624508, 5279651, 10559302, 21118604]

約数ペア:

[(1, 21118604), (2, 10559302), (4, 5279651), (13, 1624508), (26, 812254), (47, 449332), (52, 406127), (94, 224666), (188, 112333), (611, 34564), (1222, 17282), (2444, 8641)]