18555885

素因数分解:

$3^4\times 5^1\times {\mathrm{45817}}^1$

素因数の和:45834

約数の個数: 20

約数和(自身を含む): 33263868

約数和(自身を除く): 14707983

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 45817, 137451, 229085, 412353, 687255, 1237059, 2061765, 3711177, 6185295, 18555885]

約数ペア:

[(1, 18555885), (3, 6185295), (5, 3711177), (9, 2061765), (15, 1237059), (27, 687255), (45, 412353), (81, 229085), (135, 137451), (405, 45817)]