18737875

素因数分解:

$5^3\times {\mathrm{13}}^2\times {\mathrm{887}}^1$

素因数の和:928

約数の個数: 24

約数和(自身を含む): 25350624

約数和(自身を除く): 6612749

約数列:

[1, 5, 13, 25, 65, 125, 169, 325, 845, 887, 1625, 4225, 4435, 11531, 21125, 22175, 57655, 110875, 149903, 288275, 749515, 1441375, 3747575, 18737875]

約数ペア:

[(1, 18737875), (5, 3747575), (13, 1441375), (25, 749515), (65, 288275), (125, 149903), (169, 110875), (325, 57655), (845, 22175), (887, 21125), (1625, 11531), (4225, 4435)]