20911340

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1657}}^1$

素因数の和:2297

約数の個数: 24

約数和(自身を含む): 44009952

約数和(自身を除く): 23098612

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 1657, 2524, 3155, 3314, 6310, 6628, 8285, 12620, 16570, 33140, 1045567, 2091134, 4182268, 5227835, 10455670, 20911340]

約数ペア:

[(1, 20911340), (2, 10455670), (4, 5227835), (5, 4182268), (10, 2091134), (20, 1045567), (631, 33140), (1262, 16570), (1657, 12620), (2524, 8285), (3155, 6628), (3314, 6310)]