21082580

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5519}}^1$

素因数の和:5719

約数の個数: 24

約数和(自身を含む): 44513280

約数和(自身を除く): 23430700

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5519, 11038, 22076, 27595, 55190, 110380, 1054129, 2108258, 4216516, 5270645, 10541290, 21082580]

約数ペア:

[(1, 21082580), (2, 10541290), (4, 5270645), (5, 4216516), (10, 2108258), (20, 1054129), (191, 110380), (382, 55190), (764, 27595), (955, 22076), (1910, 11038), (3820, 5519)]