21372886

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{1237}}^1$

素因数の和:1455

約数の個数: 16

約数和(自身を含む): 32891184

約数和(自身を除く): 11518298

約数列:

[1, 2, 53, 106, 163, 326, 1237, 2474, 8639, 17278, 65561, 131122, 201631, 403262, 10686443, 21372886]

約数ペア:

[(1, 21372886), (2, 10686443), (53, 403262), (106, 201631), (163, 131122), (326, 65561), (1237, 17278), (2474, 8639)]