21176912

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{9661}}^1$

素因数の和:9806

約数の個数: 20

約数和(自身を含む): 41334036

約数和(自身を除く): 20157124

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 9661, 19322, 38644, 77288, 154576, 1323557, 2647114, 5294228, 10588456, 21176912]

約数ペア:

[(1, 21176912), (2, 10588456), (4, 5294228), (8, 2647114), (16, 1323557), (137, 154576), (274, 77288), (548, 38644), (1096, 19322), (2192, 9661)]