20612540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79279}}^1$

素因数の和:79301

約数の個数: 24

約数和(自身を含む): 46616640

約数和(自身を除く): 26004100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79279, 158558, 317116, 396395, 792790, 1030627, 1585580, 2061254, 4122508, 5153135, 10306270, 20612540]

約数ペア:

[(1, 20612540), (2, 10306270), (4, 5153135), (5, 4122508), (10, 2061254), (13, 1585580), (20, 1030627), (26, 792790), (52, 396395), (65, 317116), (130, 158558), (260, 79279)]