21840775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1847}}^1$

素因数の和:1911

約数の個数: 24

約数和(自身を含む): 30248064

約数和(自身を除く): 8407289

約数列:

[1, 5, 11, 25, 43, 55, 215, 275, 473, 1075, 1847, 2365, 9235, 11825, 20317, 46175, 79421, 101585, 397105, 507925, 873631, 1985525, 4368155, 21840775]

約数ペア:

[(1, 21840775), (5, 4368155), (11, 1985525), (25, 873631), (43, 507925), (55, 397105), (215, 101585), (275, 79421), (473, 46175), (1075, 20317), (1847, 11825), (2365, 9235)]