19852580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90239}}^1$

素因数の和:90259

約数の個数: 24

約数和(自身を含む): 45480960

約数和(自身を除く): 25628380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90239, 180478, 360956, 451195, 902390, 992629, 1804780, 1985258, 3970516, 4963145, 9926290, 19852580]

約数ペア:

[(1, 19852580), (2, 9926290), (4, 4963145), (5, 3970516), (10, 1985258), (11, 1804780), (20, 992629), (22, 902390), (44, 451195), (55, 360956), (110, 180478), (220, 90239)]