20403255

素因数分解:

$3^1\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1871}}^1$

素因数の和:2606

約数の個数: 16

約数和(自身を含む): 32707584

約数和(自身を除く): 12304329

約数列:

[1, 3, 5, 15, 727, 1871, 2181, 3635, 5613, 9355, 10905, 28065, 1360217, 4080651, 6801085, 20403255]

約数ペア:

[(1, 20403255), (3, 6801085), (5, 4080651), (15, 1360217), (727, 28065), (1871, 10905), (2181, 9355), (3635, 5613)]