18860569

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 23716800

約数和(自身を除く): 4856231

約数列:

[1, 7, 13, 91, 107, 149, 169, 749, 1043, 1183, 1391, 1937, 9737, 13559, 15943, 18083, 25181, 111601, 126581, 176267, 207259, 1450813, 2694367, 18860569]

約数ペア:

[(1, 18860569), (7, 2694367), (13, 1450813), (91, 207259), (107, 176267), (149, 126581), (169, 111601), (749, 25181), (1043, 18083), (1183, 15943), (1391, 13559), (1937, 9737)]