20198945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 27820800

約数和(自身を除く): 7621855

約数列:

[1, 5, 13, 23, 59, 65, 115, 229, 295, 299, 767, 1145, 1357, 1495, 2977, 3835, 5267, 6785, 13511, 14885, 17641, 26335, 67555, 68471, 88205, 175643, 310753, 342355, 878215, 1553765, 4039789, 20198945]

約数ペア:

[(1, 20198945), (5, 4039789), (13, 1553765), (23, 878215), (59, 342355), (65, 310753), (115, 175643), (229, 88205), (295, 68471), (299, 67555), (767, 26335), (1145, 17641), (1357, 14885), (1495, 13511), (2977, 6785), (3835, 5267)]