21303875

素因数分解:

$5^3\times {\mathrm{131}}^1\times {\mathrm{1301}}^1$

素因数の和:1447

約数の個数: 16

約数和(自身を含む): 26810784

約数和(自身を除く): 5506909

約数列:

[1, 5, 25, 125, 131, 655, 1301, 3275, 6505, 16375, 32525, 162625, 170431, 852155, 4260775, 21303875]

約数ペア:

[(1, 21303875), (5, 4260775), (25, 852155), (125, 170431), (131, 162625), (655, 32525), (1301, 16375), (3275, 6505)]