17950220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12641}}^1$

素因数の和:12721

約数の個数: 24

約数和(自身を含む): 38229408

約数和(自身を除く): 20279188

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12641, 25282, 50564, 63205, 126410, 252820, 897511, 1795022, 3590044, 4487555, 8975110, 17950220]

約数ペア:

[(1, 17950220), (2, 8975110), (4, 4487555), (5, 3590044), (10, 1795022), (20, 897511), (71, 252820), (142, 126410), (284, 63205), (355, 50564), (710, 25282), (1420, 12641)]