19860820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141863}}^1$

素因数の和:141879

約数の個数: 24

約数和(自身を含む): 47666304

約数和(自身を除く): 27805484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141863, 283726, 567452, 709315, 993041, 1418630, 1986082, 2837260, 3972164, 4965205, 9930410, 19860820]

約数ペア:

[(1, 19860820), (2, 9930410), (4, 4965205), (5, 3972164), (7, 2837260), (10, 1986082), (14, 1418630), (20, 993041), (28, 709315), (35, 567452), (70, 283726), (140, 141863)]