20678860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33353}}^1$

素因数の和:33393

約数の個数: 24

約数和(自身を含む): 44827776

約数和(自身を除く): 24148916

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33353, 66706, 133412, 166765, 333530, 667060, 1033943, 2067886, 4135772, 5169715, 10339430, 20678860]

約数ペア:

[(1, 20678860), (2, 10339430), (4, 5169715), (5, 4135772), (10, 2067886), (20, 1033943), (31, 667060), (62, 333530), (124, 166765), (155, 133412), (310, 66706), (620, 33353)]