18877261

素因数分解:

${\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{331}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 21083328

約数和(自身を除く): 2206067

約数列:

[1, 13, 41, 107, 331, 533, 1391, 4303, 4387, 13571, 35417, 57031, 176423, 460421, 1452097, 18877261]

約数ペア:

[(1, 18877261), (13, 1452097), (41, 460421), (107, 176423), (331, 57031), (533, 35417), (1391, 13571), (4303, 4387)]