81982480

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6287}}^1$

素因数の和:6463

約数の個数: 40

約数和(自身を含む): 191809152

約数和(自身を除く): 109826672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6287, 6520, 12574, 13040, 25148, 31435, 50296, 62870, 100592, 125740, 251480, 502960, 1024781, 2049562, 4099124, 5123905, 8198248, 10247810, 16396496, 20495620, 40991240, 81982480]

約数ペア:

[(1, 81982480), (2, 40991240), (4, 20495620), (5, 16396496), (8, 10247810), (10, 8198248), (16, 5123905), (20, 4099124), (40, 2049562), (80, 1024781), (163, 502960), (326, 251480), (652, 125740), (815, 100592), (1304, 62870), (1630, 50296), (2608, 31435), (3260, 25148), (6287, 13040), (6520, 12574)]