20178225

素因数分解:

$3^2\times 5^2\times {\mathrm{89681}}^1$

素因数の和:89697

約数の個数: 18

約数和(自身を含む): 36141846

約数和(自身を除く): 15963621

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 89681, 269043, 448405, 807129, 1345215, 2242025, 4035645, 6726075, 20178225]

約数ペア:

[(1, 20178225), (3, 6726075), (5, 4035645), (9, 2242025), (15, 1345215), (25, 807129), (45, 448405), (75, 269043), (225, 89681)]