20218865

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{3011}}^1$

素因数の和:3112

約数の個数: 16

約数和(自身を含む): 26023680

約数和(自身を除く): 5804815

約数列:

[1, 5, 17, 79, 85, 395, 1343, 3011, 6715, 15055, 51187, 237869, 255935, 1189345, 4043773, 20218865]

約数ペア:

[(1, 20218865), (5, 4043773), (17, 1189345), (79, 255935), (85, 237869), (395, 51187), (1343, 15055), (3011, 6715)]