20209821

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{1777}}^1$

素因数の和:2020

約数の個数: 16

約数和(自身を含む): 28675584

約数和(自身を除く): 8465763

約数列:

[1, 3, 17, 51, 223, 669, 1777, 3791, 5331, 11373, 30209, 90627, 396271, 1188813, 6736607, 20209821]

約数ペア:

[(1, 20209821), (3, 6736607), (17, 1188813), (51, 396271), (223, 90627), (669, 30209), (1777, 11373), (3791, 5331)]