20986575

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9649}}^1$

素因数の和:9691

約数の個数: 24

約数和(自身を含む): 35898000

約数和(自身を除く): 14911425

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9649, 28947, 48245, 144735, 241225, 279821, 723675, 839463, 1399105, 4197315, 6995525, 20986575]

約数ペア:

[(1, 20986575), (3, 6995525), (5, 4197315), (15, 1399105), (25, 839463), (29, 723675), (75, 279821), (87, 241225), (145, 144735), (435, 48245), (725, 28947), (2175, 9649)]