20825505

素因数分解:

$3^4\times 5^1\times {\mathrm{51421}}^1$

素因数の和:51438

約数の個数: 20

約数和(自身を含む): 37332372

約数和(自身を除く): 16506867

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51421, 154263, 257105, 462789, 771315, 1388367, 2313945, 4165101, 6941835, 20825505]

約数ペア:

[(1, 20825505), (3, 6941835), (5, 4165101), (9, 2313945), (15, 1388367), (27, 771315), (45, 462789), (81, 257105), (135, 154263), (405, 51421)]