21979732

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2111}}^1$

素因数の和:2271

約数の個数: 24

約数和(自身を含む): 40803840

約数和(自身を除く): 18824108

約数列:

[1, 2, 4, 19, 38, 76, 137, 274, 548, 2111, 2603, 4222, 5206, 8444, 10412, 40109, 80218, 160436, 289207, 578414, 1156828, 5494933, 10989866, 21979732]

約数ペア:

[(1, 21979732), (2, 10989866), (4, 5494933), (19, 1156828), (38, 578414), (76, 289207), (137, 160436), (274, 80218), (548, 40109), (2111, 10412), (2603, 8444), (4222, 5206)]