21178916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{2953}}^1$

素因数の和:3131

約数の個数: 24

約数和(自身を含む): 40694304

約数和(自身を除く): 19515388

約数列:

[1, 2, 4, 11, 22, 44, 163, 326, 652, 1793, 2953, 3586, 5906, 7172, 11812, 32483, 64966, 129932, 481339, 962678, 1925356, 5294729, 10589458, 21178916]

約数ペア:

[(1, 21178916), (2, 10589458), (4, 5294729), (11, 1925356), (22, 962678), (44, 481339), (163, 129932), (326, 64966), (652, 32483), (1793, 11812), (2953, 7172), (3586, 5906)]