21987780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{366463}}^1$

素因数の和:366475

約数の個数: 24

約数和(自身を含む): 61565952

約数和(自身を除く): 39578172

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 366463, 732926, 1099389, 1465852, 1832315, 2198778, 3664630, 4397556, 5496945, 7329260, 10993890, 21987780]

約数ペア:

[(1, 21987780), (2, 10993890), (3, 7329260), (4, 5496945), (5, 4397556), (6, 3664630), (10, 2198778), (12, 1832315), (15, 1465852), (20, 1099389), (30, 732926), (60, 366463)]