20520903

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{14221}}^1$

素因数の和:14274

約数の個数: 16

約数和(自身を含む): 30264416

約数和(自身を除く): 9743513

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 14221, 42663, 184873, 526177, 554619, 1578531, 6840301, 20520903]

約数ペア:

[(1, 20520903), (3, 6840301), (13, 1578531), (37, 554619), (39, 526177), (111, 184873), (481, 42663), (1443, 14221)]