20397375

素因数分解:

$3^2\times 5^3\times {\mathrm{18131}}^1$

素因数の和:18152

約数の個数: 24

約数和(自身を含む): 36771696

約数和(自身を除く): 16374321

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 18131, 54393, 90655, 163179, 271965, 453275, 815895, 1359825, 2266375, 4079475, 6799125, 20397375]

約数ペア:

[(1, 20397375), (3, 6799125), (5, 4079475), (9, 2266375), (15, 1359825), (25, 815895), (45, 453275), (75, 271965), (125, 163179), (225, 90655), (375, 54393), (1125, 18131)]