646649620

素因数分解:

$2^2\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{27611}}^1$

素因数の和:28791

約数の個数: 24

約数和(自身を含む): 1359173088

約数和(自身を除く): 712523468

約数列:

[1, 2, 4, 5, 10, 20, 1171, 2342, 4684, 5855, 11710, 23420, 27611, 55222, 110444, 138055, 276110, 552220, 32332481, 64664962, 129329924, 161662405, 323324810, 646649620]

約数ペア:

[(1, 646649620), (2, 323324810), (4, 161662405), (5, 129329924), (10, 64664962), (20, 32332481), (1171, 552220), (2342, 276110), (4684, 138055), (5855, 110444), (11710, 55222), (23420, 27611)]