19958967

素因数分解:

$3^4\times 7^1\times {\mathrm{35201}}^1$

素因数の和:35220

約数の個数: 20

約数和(自身を含む): 34075536

約数和(自身を除く): 14116569

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35201, 105603, 246407, 316809, 739221, 950427, 2217663, 2851281, 6652989, 19958967]

約数ペア:

[(1, 19958967), (3, 6652989), (7, 2851281), (9, 2217663), (21, 950427), (27, 739221), (63, 316809), (81, 246407), (189, 105603), (567, 35201)]