81991595

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3361}}^1$

素因数の和:3431

約数の個数: 32

約数和(自身を含む): 122000256

約数和(自身を除く): 40008661

約数列:

[1, 5, 7, 17, 35, 41, 85, 119, 205, 287, 595, 697, 1435, 3361, 3485, 4879, 16805, 23527, 24395, 57137, 117635, 137801, 285685, 399959, 689005, 964607, 1999795, 2342617, 4823035, 11713085, 16398319, 81991595]

約数ペア:

[(1, 81991595), (5, 16398319), (7, 11713085), (17, 4823035), (35, 2342617), (41, 1999795), (85, 964607), (119, 689005), (205, 399959), (287, 285685), (595, 137801), (697, 117635), (1435, 57137), (3361, 24395), (3485, 23527), (4879, 16805)]