20470779

素因数分解:

$3^3\times 7^2\times {\mathrm{15473}}^1$

素因数の和:15496

約数の個数: 24

約数和(自身を含む): 35280720

約数和(自身を除く): 14809941

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15473, 46419, 108311, 139257, 324933, 417771, 758177, 974799, 2274531, 2924397, 6823593, 20470779]

約数ペア:

[(1, 20470779), (3, 6823593), (7, 2924397), (9, 2274531), (21, 974799), (27, 758177), (49, 417771), (63, 324933), (147, 139257), (189, 108311), (441, 46419), (1323, 15473)]