20681625

素因数分解:

$3^1\times 5^3\times {\mathrm{131}}^1\times {\mathrm{421}}^1$

素因数の和:570

約数の個数: 32

約数和(自身を含む): 34759296

約数和(自身を除く): 14077671

約数列:

[1, 3, 5, 15, 25, 75, 125, 131, 375, 393, 421, 655, 1263, 1965, 2105, 3275, 6315, 9825, 10525, 16375, 31575, 49125, 52625, 55151, 157875, 165453, 275755, 827265, 1378775, 4136325, 6893875, 20681625]

約数ペア:

[(1, 20681625), (3, 6893875), (5, 4136325), (15, 1378775), (25, 827265), (75, 275755), (125, 165453), (131, 157875), (375, 55151), (393, 52625), (421, 49125), (655, 31575), (1263, 16375), (1965, 10525), (2105, 9825), (3275, 6315)]