19227820

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1171}}^1$

素因数の和:2001

約数の個数: 24

約数和(自身を含む): 40462128

約数和(自身を除く): 21234308

約数列:

[1, 2, 4, 5, 10, 20, 821, 1171, 1642, 2342, 3284, 4105, 4684, 5855, 8210, 11710, 16420, 23420, 961391, 1922782, 3845564, 4806955, 9613910, 19227820]

約数ペア:

[(1, 19227820), (2, 9613910), (4, 4806955), (5, 3845564), (10, 1922782), (20, 961391), (821, 23420), (1171, 16420), (1642, 11710), (2342, 8210), (3284, 5855), (4105, 4684)]