20128291281

素因数分解:

$3^2\times 7^1\times {\mathrm{743}}^1\times {\mathrm{430009}}^1$

素因数の和:430765

約数の個数: 24

約数和(自身を含む): 33272453760

約数和(自身を除く): 13144162479

約数列:

[1, 3, 7, 9, 21, 63, 743, 2229, 5201, 6687, 15603, 46809, 430009, 1290027, 3010063, 3870081, 9030189, 27090567, 319496687, 958490061, 2236476809, 2875470183, 6709430427, 20128291281]

約数ペア:

[(1, 20128291281), (3, 6709430427), (7, 2875470183), (9, 2236476809), (21, 958490061), (63, 319496687), (743, 27090567), (2229, 9030189), (5201, 3870081), (6687, 3010063), (15603, 1290027), (46809, 430009)]