28311530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{217781}}^1$

素因数の和:217801

約数の個数: 16

約数和(自身を含む): 54881064

約数和(自身を除く): 26569534

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 217781, 435562, 1088905, 2177810, 2831153, 5662306, 14155765, 28311530]

約数ペア:

[(1, 28311530), (2, 14155765), (5, 5662306), (10, 2831153), (13, 2177810), (26, 1088905), (65, 435562), (130, 217781)]