21820275

素因数分解:

$3^2\times 5^2\times {\mathrm{96979}}^1$

素因数の和:96995

約数の個数: 18

約数和(自身を含む): 39082940

約数和(自身を除く): 17262665

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 96979, 290937, 484895, 872811, 1454685, 2424475, 4364055, 7273425, 21820275]

約数ペア:

[(1, 21820275), (3, 7273425), (5, 4364055), (9, 2424475), (15, 1454685), (25, 872811), (45, 484895), (75, 290937), (225, 96979)]