20128545

素因数分解:

$3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{911}}^1$

素因数の和:1413

約数の個数: 24

約数和(自身を含む): 34998912

約数和(自身を除く): 14870367

約数列:

[1, 3, 5, 9, 15, 45, 491, 911, 1473, 2455, 2733, 4419, 4555, 7365, 8199, 13665, 22095, 40995, 447301, 1341903, 2236505, 4025709, 6709515, 20128545]

約数ペア:

[(1, 20128545), (3, 6709515), (5, 4025709), (9, 2236505), (15, 1341903), (45, 447301), (491, 40995), (911, 22095), (1473, 13665), (2455, 8199), (2733, 7365), (4419, 4555)]