38639620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27211}}^1$

素因数の和:27291

約数の個数: 24

約数和(自身を含む): 82289088

約数和(自身を除く): 43649468

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 27211, 54422, 108844, 136055, 272110, 544220, 1931981, 3863962, 7727924, 9659905, 19319810, 38639620]

約数ペア:

[(1, 38639620), (2, 19319810), (4, 9659905), (5, 7727924), (10, 3863962), (20, 1931981), (71, 544220), (142, 272110), (284, 136055), (355, 108844), (710, 54422), (1420, 27211)]