20451809

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{367}}^1\times {\mathrm{419}}^1$

素因数の和:812

約数の個数: 16

約数和(自身を含む): 24729600

約数和(自身を除く): 4277791

約数列:

[1, 7, 19, 133, 367, 419, 2569, 2933, 6973, 7961, 48811, 55727, 153773, 1076411, 2921687, 20451809]

約数ペア:

[(1, 20451809), (7, 2921687), (19, 1076411), (133, 153773), (367, 55727), (419, 48811), (2569, 7961), (2933, 6973)]