128698765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{907}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 173900160

約数和(自身を除く): 45201395

約数列:

[1, 5, 13, 37, 59, 65, 185, 295, 481, 767, 907, 2183, 2405, 3835, 4535, 10915, 11791, 28379, 33559, 53513, 58955, 141895, 167795, 267565, 436267, 695669, 1979981, 2181335, 3478345, 9899905, 25739753, 128698765]

約数ペア:

[(1, 128698765), (5, 25739753), (13, 9899905), (37, 3478345), (59, 2181335), (65, 1979981), (185, 695669), (295, 436267), (481, 267565), (767, 167795), (907, 141895), (2183, 58955), (2405, 53513), (3835, 33559), (4535, 28379), (10915, 11791)]