81977660

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{40583}}^1$

素因数の和:40693

約数の個数: 24

約数和(自身を含む): 173861856

約数和(自身を除く): 91884196

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 40583, 81166, 162332, 202915, 405830, 811660, 4098883, 8197766, 16395532, 20494415, 40988830, 81977660]

約数ペア:

[(1, 81977660), (2, 40988830), (4, 20494415), (5, 16395532), (10, 8197766), (20, 4098883), (101, 811660), (202, 405830), (404, 202915), (505, 162332), (1010, 81166), (2020, 40583)]