81158140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{579701}}^1$

素因数の和:579717

約数の個数: 24

約数和(自身を含む): 194779872

約数和(自身を除く): 113621732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 579701, 1159402, 2318804, 2898505, 4057907, 5797010, 8115814, 11594020, 16231628, 20289535, 40579070, 81158140]

約数ペア:

[(1, 81158140), (2, 40579070), (4, 20289535), (5, 16231628), (7, 11594020), (10, 8115814), (14, 5797010), (20, 4057907), (28, 2898505), (35, 2318804), (70, 1159402), (140, 579701)]