20804775

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3907}}^1$

素因数の和:3991

約数の個数: 24

約数和(自身を含む): 34890624

約数和(自身を除く): 14085849

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3907, 5325, 11721, 19535, 58605, 97675, 277397, 293025, 832191, 1386985, 4160955, 6934925, 20804775]

約数ペア:

[(1, 20804775), (3, 6934925), (5, 4160955), (15, 1386985), (25, 832191), (71, 293025), (75, 277397), (213, 97675), (355, 58605), (1065, 19535), (1775, 11721), (3907, 5325)]