20121529905

素因数分解:

$3^2\times 5^1\times {\mathrm{447145109}}^1$

素因数の和:447145120

約数の個数: 12

約数和(自身を含む): 34877318580

約数和(自身を除く): 14755788675

約数列:

[1, 3, 5, 9, 15, 45, 447145109, 1341435327, 2235725545, 4024305981, 6707176635, 20121529905]

約数ペア:

[(1, 20121529905), (3, 6707176635), (5, 4024305981), (9, 2235725545), (15, 1341435327), (45, 447145109)]