81339580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{580997}}^1$

素因数の和:581013

約数の個数: 24

約数和(自身を含む): 195215328

約数和(自身を除く): 113875748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 580997, 1161994, 2323988, 2904985, 4066979, 5809970, 8133958, 11619940, 16267916, 20334895, 40669790, 81339580]

約数ペア:

[(1, 81339580), (2, 40669790), (4, 20334895), (5, 16267916), (7, 11619940), (10, 8133958), (14, 5809970), (20, 4066979), (28, 2904985), (35, 2323988), (70, 1161994), (140, 580997)]