21877163

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1123}}^1$

素因数の和:1175

約数の個数: 24

約数和(自身を含む): 28702464

約数和(自身を除く): 6825301

約数列:

[1, 7, 11, 23, 77, 121, 161, 253, 847, 1123, 1771, 2783, 7861, 12353, 19481, 25829, 86471, 135883, 180803, 284119, 951181, 1988833, 3125309, 21877163]

約数ペア:

[(1, 21877163), (7, 3125309), (11, 1988833), (23, 951181), (77, 284119), (121, 180803), (161, 135883), (253, 86471), (847, 25829), (1123, 19481), (1771, 12353), (2783, 7861)]