20558181

素因数分解:

$3^1\times 7^1\times {\mathrm{613}}^1\times {\mathrm{1597}}^1$

素因数の和:2220

約数の個数: 16

約数和(自身を含む): 31397504

約数和(自身を除く): 10839323

約数列:

[1, 3, 7, 21, 613, 1597, 1839, 4291, 4791, 11179, 12873, 33537, 978961, 2936883, 6852727, 20558181]

約数ペア:

[(1, 20558181), (3, 6852727), (7, 2936883), (21, 978961), (613, 33537), (1597, 12873), (1839, 11179), (4291, 4791)]