8178980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4049}}^1$

素因数の和:4159

約数の個数: 24

約数和(自身を含む): 17350200

約数和(自身を除く): 9171220

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 4049, 8098, 16196, 20245, 40490, 80980, 408949, 817898, 1635796, 2044745, 4089490, 8178980]

約数ペア:

[(1, 8178980), (2, 4089490), (4, 2044745), (5, 1635796), (10, 817898), (20, 408949), (101, 80980), (202, 40490), (404, 20245), (505, 16196), (1010, 8098), (2020, 4049)]