18707717

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{887}}^1$

素因数の和:1048

約数の個数: 16

約数和(自身を含む): 22505472

約数和(自身を除く): 3797755

約数列:

[1, 7, 23, 131, 161, 887, 917, 3013, 6209, 20401, 21091, 116197, 142807, 813379, 2672531, 18707717]

約数ペア:

[(1, 18707717), (7, 2672531), (23, 813379), (131, 142807), (161, 116197), (887, 21091), (917, 20401), (3013, 6209)]