81185320

素因数分解:

$2^3\times 5^1\times {\mathrm{2029633}}^1$

素因数の和:2029644

約数の個数: 16

約数和(自身を含む): 182667060

約数和(自身を除く): 101481740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2029633, 4059266, 8118532, 10148165, 16237064, 20296330, 40592660, 81185320]

約数ペア:

[(1, 81185320), (2, 40592660), (4, 20296330), (5, 16237064), (8, 10148165), (10, 8118532), (20, 4059266), (40, 2029633)]