78217505

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{2789}}^1$

素因数の和:2944

約数の個数: 16

約数和(自身を含む): 96422400

約数和(自身を除く): 18204895

約数列:

[1, 5, 71, 79, 355, 395, 2789, 5609, 13945, 28045, 198019, 220331, 990095, 1101655, 15643501, 78217505]

約数ペア:

[(1, 78217505), (5, 15643501), (71, 1101655), (79, 990095), (355, 220331), (395, 198019), (2789, 28045), (5609, 13945)]