18904851

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2753}}^1$

素因数の和:2875

約数の個数: 24

約数和(自身を含む): 31505760

約数和(自身を除く): 12600909

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 2753, 6867, 8259, 19271, 24777, 57813, 173439, 300077, 900231, 2100539, 2700693, 6301617, 18904851]

約数ペア:

[(1, 18904851), (3, 6301617), (7, 2700693), (9, 2100539), (21, 900231), (63, 300077), (109, 173439), (327, 57813), (763, 24777), (981, 19271), (2289, 8259), (2753, 6867)]