21228045

素因数分解:

$3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{5381}}^1$

素因数の和:5652

約数の個数: 16

約数和(自身を含む): 34100352

約数和(自身を除く): 12872307

約数列:

[1, 3, 5, 15, 263, 789, 1315, 3945, 5381, 16143, 26905, 80715, 1415203, 4245609, 7076015, 21228045]

約数ペア:

[(1, 21228045), (3, 7076015), (5, 4245609), (15, 1415203), (263, 80715), (789, 26905), (1315, 16143), (3945, 5381)]