20897396

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5087}}^1$

素因数の和:5183

約数の個数: 24

約数和(自身を含む): 39889920

約数和(自身を除く): 18992524

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5087, 10174, 20348, 66131, 132262, 264524, 401873, 803746, 1607492, 5224349, 10448698, 20897396]

約数ペア:

[(1, 20897396), (2, 10448698), (4, 5224349), (13, 1607492), (26, 803746), (52, 401873), (79, 264524), (158, 132262), (316, 66131), (1027, 20348), (2054, 10174), (4108, 5087)]