20408154

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{261643}}^1$

素因数の和:261661

約数の個数: 16

約数和(自身を含む): 43956192

約数和(自身を除く): 23548038

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 261643, 523286, 784929, 1569858, 3401359, 6802718, 10204077, 20408154]

約数ペア:

[(1, 20408154), (2, 10204077), (3, 6802718), (6, 3401359), (13, 1569858), (26, 784929), (39, 523286), (78, 261643)]