81129260

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{40163}}^1$

素因数の和:40273

約数の個数: 24

約数和(自身を含む): 172062576

約数和(自身を除く): 90933316

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 40163, 80326, 160652, 200815, 401630, 803260, 4056463, 8112926, 16225852, 20282315, 40564630, 81129260]

約数ペア:

[(1, 81129260), (2, 40564630), (4, 20282315), (5, 16225852), (10, 8112926), (20, 4056463), (101, 803260), (202, 401630), (404, 200815), (505, 160652), (1010, 80326), (2020, 40163)]