81329780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{580927}}^1$

素因数の和:580943

約数の個数: 24

約数和(自身を含む): 195191808

約数和(自身を除く): 113862028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 580927, 1161854, 2323708, 2904635, 4066489, 5809270, 8132978, 11618540, 16265956, 20332445, 40664890, 81329780]

約数ペア:

[(1, 81329780), (2, 40664890), (4, 20332445), (5, 16265956), (7, 11618540), (10, 8132978), (14, 5809270), (20, 4066489), (28, 2904635), (35, 2323708), (70, 1161854), (140, 580927)]