81518788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{3571}}^1$

素因数の和:4027

約数の個数: 24

約数和(自身を含む): 154024640

約数和(自身を除く): 72505852

約数列:

[1, 2, 4, 13, 26, 52, 439, 878, 1756, 3571, 5707, 7142, 11414, 14284, 22828, 46423, 92846, 185692, 1567669, 3135338, 6270676, 20379697, 40759394, 81518788]

約数ペア:

[(1, 81518788), (2, 40759394), (4, 20379697), (13, 6270676), (26, 3135338), (52, 1567669), (439, 185692), (878, 92846), (1756, 46423), (3571, 22828), (5707, 14284), (7142, 11414)]