20539989

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1481}}^1$

素因数の和:1577

約数の個数: 24

約数和(自身を含む): 31442112

約数和(自身を除く): 10902123

約数列:

[1, 3, 9, 23, 67, 69, 201, 207, 603, 1481, 1541, 4443, 4623, 13329, 13869, 34063, 99227, 102189, 297681, 306567, 893043, 2282221, 6846663, 20539989]

約数ペア:

[(1, 20539989), (3, 6846663), (9, 2282221), (23, 893043), (67, 306567), (69, 297681), (201, 102189), (207, 99227), (603, 34063), (1481, 13869), (1541, 13329), (4443, 4623)]