21368956

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{4861}}^1$

素因数の和:5029

約数の個数: 24

約数和(自身を含む): 43018976

約数和(自身を除く): 21650020

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 4396, 4861, 9722, 19444, 34027, 68054, 136108, 763177, 1526354, 3052708, 5342239, 10684478, 21368956]

約数ペア:

[(1, 21368956), (2, 10684478), (4, 5342239), (7, 3052708), (14, 1526354), (28, 763177), (157, 136108), (314, 68054), (628, 34027), (1099, 19444), (2198, 9722), (4396, 4861)]