20286729

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1979}}^1$

素因数の和:2069

約数の個数: 24

約数和(自身を含む): 31505760

約数和(自身を除く): 11219031

約数列:

[1, 3, 9, 17, 51, 67, 153, 201, 603, 1139, 1979, 3417, 5937, 10251, 17811, 33643, 100929, 132593, 302787, 397779, 1193337, 2254081, 6762243, 20286729]

約数ペア:

[(1, 20286729), (3, 6762243), (9, 2254081), (17, 1193337), (51, 397779), (67, 302787), (153, 132593), (201, 100929), (603, 33643), (1139, 17811), (1979, 10251), (3417, 5937)]