65120920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37861}}^1$

素因数の和:37915

約数の個数: 32

約数和(自身を含む): 149933520

約数和(自身を除く): 84812600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 37861, 75722, 151444, 189305, 302888, 378610, 757220, 1514440, 1628023, 3256046, 6512092, 8140115, 13024184, 16280230, 32560460, 65120920]

約数ペア:

[(1, 65120920), (2, 32560460), (4, 16280230), (5, 13024184), (8, 8140115), (10, 6512092), (20, 3256046), (40, 1628023), (43, 1514440), (86, 757220), (172, 378610), (215, 302888), (344, 189305), (430, 151444), (860, 75722), (1720, 37861)]