21255110

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111869}}^1$

素因数の和:111895

約数の個数: 16

約数和(自身を含む): 40273200

約数和(自身を除く): 19018090

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111869, 223738, 559345, 1118690, 2125511, 4251022, 10627555, 21255110]

約数ペア:

[(1, 21255110), (2, 10627555), (5, 4251022), (10, 2125511), (19, 1118690), (38, 559345), (95, 223738), (190, 111869)]