21699419

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{2543}}^1$

素因数の和:2626

約数の個数: 16

約数和(自身を含む): 26376192

約数和(自身を除く): 4676773

約数列:

[1, 7, 23, 53, 161, 371, 1219, 2543, 8533, 17801, 58489, 134779, 409423, 943453, 3099917, 21699419]

約数ペア:

[(1, 21699419), (7, 3099917), (23, 943453), (53, 409423), (161, 134779), (371, 58489), (1219, 17801), (2543, 8533)]