20655225

素因数分解:

$3^2\times 5^2\times {\mathrm{91801}}^1$

素因数の和:91817

約数の個数: 18

約数和(自身を含む): 36996206

約数和(自身を除く): 16340981

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 91801, 275403, 459005, 826209, 1377015, 2295025, 4131045, 6885075, 20655225]

約数ペア:

[(1, 20655225), (3, 6885075), (5, 4131045), (9, 2295025), (15, 1377015), (25, 826209), (45, 459005), (75, 275403), (225, 91801)]