81859490

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{81049}}^1$

素因数の和:81157

約数の個数: 16

約数和(自身を含む): 148807800

約数和(自身を除く): 66948310

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 81049, 162098, 405245, 810490, 8185949, 16371898, 40929745, 81859490]

約数ペア:

[(1, 81859490), (2, 40929745), (5, 16371898), (10, 8185949), (101, 810490), (202, 405245), (505, 162098), (1010, 81049)]