21990147218

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{2633}}^1\times {\mathrm{321221}}^1$

素因数の和:323869

約数の個数: 16

約数和(自身を含む): 35536147416

約数和(自身を除く): 13546000198

約数列:

[1, 2, 13, 26, 2633, 5266, 34229, 68458, 321221, 642442, 4175873, 8351746, 845774893, 1691549786, 10995073609, 21990147218]

約数ペア:

[(1, 21990147218), (2, 10995073609), (13, 1691549786), (26, 845774893), (2633, 8351746), (5266, 4175873), (34229, 642442), (68458, 321221)]