19777820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9791}}^1$

素因数の和:9901

約数の個数: 24

約数和(自身を含む): 41948928

約数和(自身を除く): 22171108

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9791, 19582, 39164, 48955, 97910, 195820, 988891, 1977782, 3955564, 4944455, 9888910, 19777820]

約数ペア:

[(1, 19777820), (2, 9888910), (4, 4944455), (5, 3955564), (10, 1977782), (20, 988891), (101, 195820), (202, 97910), (404, 48955), (505, 39164), (1010, 19582), (2020, 9791)]