19979045

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{337}}^1$

素因数の和:580

約数の個数: 16

約数和(自身を含む): 24530688

約数和(自身を除く): 4551643

約数列:

[1, 5, 71, 167, 337, 355, 835, 1685, 11857, 23927, 56279, 59285, 119635, 281395, 3995809, 19979045]

約数ペア:

[(1, 19979045), (5, 3995809), (71, 281395), (167, 119635), (337, 59285), (355, 56279), (835, 23927), (1685, 11857)]