21619305

素因数分解:

$3^4\times 5^1\times {\mathrm{53381}}^1$

素因数の和:53398

約数の個数: 20

約数和(自身を含む): 38755332

約数和(自身を除く): 17136027

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53381, 160143, 266905, 480429, 800715, 1441287, 2402145, 4323861, 7206435, 21619305]

約数ペア:

[(1, 21619305), (3, 7206435), (5, 4323861), (9, 2402145), (15, 1441287), (27, 800715), (45, 480429), (81, 266905), (135, 160143), (405, 53381)]