991640245

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1\times {\mathrm{12821}}^1$

素因数の和:13356

約数の個数: 16

約数和(自身を含む): 1230912000

約数和(自身を除く): 239271755

約数列:

[1, 5, 31, 155, 499, 2495, 12821, 15469, 64105, 77345, 397451, 1987255, 6397679, 31988395, 198328049, 991640245]

約数ペア:

[(1, 991640245), (5, 198328049), (31, 31988395), (155, 6397679), (499, 1987255), (2495, 397451), (12821, 77345), (15469, 64105)]