20668417

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3677}}^1$

素因数の和:3768

約数の個数: 16

約数和(自身を含む): 26128512

約数和(自身を除く): 5460095

約数列:

[1, 7, 11, 73, 77, 511, 803, 3677, 5621, 25739, 40447, 268421, 283129, 1878947, 2952631, 20668417]

約数ペア:

[(1, 20668417), (7, 2952631), (11, 1878947), (73, 283129), (77, 268421), (511, 40447), (803, 25739), (3677, 5621)]