21228987

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{2377}}^1$

素因数の和:2622

約数の個数: 16

約数和(自身を含む): 30628640

約数和(自身を除く): 9399653

約数列:

[1, 3, 13, 39, 229, 687, 2377, 2977, 7131, 8931, 30901, 92703, 544333, 1632999, 7076329, 21228987]

約数ペア:

[(1, 21228987), (3, 7076329), (13, 1632999), (39, 544333), (229, 92703), (687, 30901), (2377, 8931), (2977, 7131)]