19495820

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1871}}^1$

素因数の和:2401

約数の個数: 24

約数和(自身を含む): 41041728

約数和(自身を除く): 21545908

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 1871, 2084, 2605, 3742, 5210, 7484, 9355, 10420, 18710, 37420, 974791, 1949582, 3899164, 4873955, 9747910, 19495820]

約数ペア:

[(1, 19495820), (2, 9747910), (4, 4873955), (5, 3899164), (10, 1949582), (20, 974791), (521, 37420), (1042, 18710), (1871, 10420), (2084, 9355), (2605, 7484), (3742, 5210)]