20578445

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{1409}}^1$

素因数の和:1564

約数の個数: 16

約数和(自身を含む): 25989120

約数和(自身を除く): 5410675

約数列:

[1, 5, 23, 115, 127, 635, 1409, 2921, 7045, 14605, 32407, 162035, 178943, 894715, 4115689, 20578445]

約数ペア:

[(1, 20578445), (5, 4115689), (23, 894715), (115, 178943), (127, 162035), (635, 32407), (1409, 14605), (2921, 7045)]