81139660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{579569}}^1$

素因数の和:579585

約数の個数: 24

約数和(自身を含む): 194735520

約数和(自身を除く): 113595860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 579569, 1159138, 2318276, 2897845, 4056983, 5795690, 8113966, 11591380, 16227932, 20284915, 40569830, 81139660]

約数ペア:

[(1, 81139660), (2, 40569830), (4, 20284915), (5, 16227932), (7, 11591380), (10, 8113966), (14, 5795690), (20, 4056983), (28, 2897845), (35, 2318276), (70, 1159138), (140, 579569)]