21790281

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^2$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 31121280

約数和(自身を除く): 9330999

約数列:

[1, 3, 29, 47, 73, 87, 141, 219, 1363, 2117, 3431, 4089, 5329, 6351, 10293, 15987, 99499, 154541, 250463, 298497, 463623, 751389, 7263427, 21790281]

約数ペア:

[(1, 21790281), (3, 7263427), (29, 751389), (47, 463623), (73, 298497), (87, 250463), (141, 154541), (219, 99499), (1363, 15987), (2117, 10293), (3431, 6351), (4089, 5329)]