20975195

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{10729}}^1$

素因数の和:10774

約数の個数: 16

約数和(自身を含む): 27812160

約数和(自身を除く): 6836965

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 10729, 53645, 182393, 246767, 911965, 1233835, 4195039, 20975195]

約数ペア:

[(1, 20975195), (5, 4195039), (17, 1233835), (23, 911965), (85, 246767), (115, 182393), (391, 53645), (1955, 10729)]