21755180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{35089}}^1$

素因数の和:35129

約数の個数: 24

約数和(自身を含む): 47160960

約数和(自身を除く): 25405780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 35089, 70178, 140356, 175445, 350890, 701780, 1087759, 2175518, 4351036, 5438795, 10877590, 21755180]

約数ペア:

[(1, 21755180), (2, 10877590), (4, 5438795), (5, 4351036), (10, 2175518), (20, 1087759), (31, 701780), (62, 350890), (124, 175445), (155, 140356), (310, 70178), (620, 35089)]