20122986

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{257987}}^1$

素因数の和:258005

約数の個数: 16

約数和(自身を含む): 43341984

約数和(自身を除く): 23218998

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 257987, 515974, 773961, 1547922, 3353831, 6707662, 10061493, 20122986]

約数ペア:

[(1, 20122986), (2, 10061493), (3, 6707662), (6, 3353831), (13, 1547922), (26, 773961), (39, 515974), (78, 257987)]