7900220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3911}}^1$

素因数の和:4021

約数の個数: 24

約数和(自身を含む): 16759008

約数和(自身を除く): 8858788

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 3911, 7822, 15644, 19555, 39110, 78220, 395011, 790022, 1580044, 1975055, 3950110, 7900220]

約数ペア:

[(1, 7900220), (2, 3950110), (4, 1975055), (5, 1580044), (10, 790022), (20, 395011), (101, 78220), (202, 39110), (404, 19555), (505, 15644), (1010, 7822), (2020, 3911)]