20814813

素因数分解:

$3^4\times {\mathrm{313}}^1\times {\mathrm{821}}^1$

素因数の和:1146

約数の個数: 20

約数和(自身を含む): 31231068

約数和(自身を除く): 10416255

約数列:

[1, 3, 9, 27, 81, 313, 821, 939, 2463, 2817, 7389, 8451, 22167, 25353, 66501, 256973, 770919, 2312757, 6938271, 20814813]

約数ペア:

[(1, 20814813), (3, 6938271), (9, 2312757), (27, 770919), (81, 256973), (313, 66501), (821, 25353), (939, 22167), (2463, 8451), (2817, 7389)]