20217501

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{863}}^1$

素因数の和:1025

約数の個数: 24

約数和(自身を含む): 31000320

約数和(自身を除く): 10782819

約数列:

[1, 3, 9, 19, 57, 137, 171, 411, 863, 1233, 2589, 2603, 7767, 7809, 16397, 23427, 49191, 118231, 147573, 354693, 1064079, 2246389, 6739167, 20217501]

約数ペア:

[(1, 20217501), (3, 6739167), (9, 2246389), (19, 1064079), (57, 354693), (137, 147573), (171, 118231), (411, 49191), (863, 23427), (1233, 16397), (2589, 7809), (2603, 7767)]