21844420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84017}}^1$

素因数の和:84039

約数の個数: 24

約数和(自身を含む): 49402584

約数和(自身を除く): 27558164

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84017, 168034, 336068, 420085, 840170, 1092221, 1680340, 2184442, 4368884, 5461105, 10922210, 21844420]

約数ペア:

[(1, 21844420), (2, 10922210), (4, 5461105), (5, 4368884), (10, 2184442), (13, 1680340), (20, 1092221), (26, 840170), (52, 420085), (65, 336068), (130, 168034), (260, 84017)]