20674810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{443}}^1$

素因数の和:822

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19604870

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 359, 443, 718, 886, 1795, 2215, 3590, 4430, 4667, 5759, 9334, 11518, 23335, 28795, 46670, 57590, 159037, 318074, 795185, 1590370, 2067481, 4134962, 10337405, 20674810]

約数ペア:

[(1, 20674810), (2, 10337405), (5, 4134962), (10, 2067481), (13, 1590370), (26, 795185), (65, 318074), (130, 159037), (359, 57590), (443, 46670), (718, 28795), (886, 23335), (1795, 11518), (2215, 9334), (3590, 5759), (4430, 4667)]