19917945

素因数分解:

$3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{3917}}^1$

素因数の和:4041

約数の個数: 24

約数和(自身を含む): 34838856

約数和(自身を除く): 14920911

約数列:

[1, 3, 5, 9, 15, 45, 113, 339, 565, 1017, 1695, 3917, 5085, 11751, 19585, 35253, 58755, 176265, 442621, 1327863, 2213105, 3983589, 6639315, 19917945]

約数ペア:

[(1, 19917945), (3, 6639315), (5, 3983589), (9, 2213105), (15, 1327863), (45, 442621), (113, 176265), (339, 58755), (565, 35253), (1017, 19585), (1695, 11751), (3917, 5085)]