28401815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{25703}}^1$

素因数の和:25738

約数の個数: 16

約数和(自身を含む): 38864448

約数和(自身を除く): 10462633

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 25703, 128515, 334139, 436951, 1670695, 2184755, 5680363, 28401815]

約数ペア:

[(1, 28401815), (5, 5680363), (13, 2184755), (17, 1670695), (65, 436951), (85, 334139), (221, 128515), (1105, 25703)]