20847285

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8741}}^1$

素因数の和:8805

約数の個数: 24

約数和(自身を含む): 36821304

約数和(自身を除く): 15974019

約数列:

[1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795, 2385, 8741, 26223, 43705, 78669, 131115, 393345, 463273, 1389819, 2316365, 4169457, 6949095, 20847285]

約数ペア:

[(1, 20847285), (3, 6949095), (5, 4169457), (9, 2316365), (15, 1389819), (45, 463273), (53, 393345), (159, 131115), (265, 78669), (477, 43705), (795, 26223), (2385, 8741)]