20684673

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:750

約数の個数: 32

約数和(自身を含む): 32835200

約数和(自身を除く): 12150527

約数列:

[1, 3, 9, 19, 27, 57, 61, 171, 183, 513, 549, 661, 1159, 1647, 1983, 3477, 5949, 10431, 12559, 17847, 31293, 37677, 40321, 113031, 120963, 339093, 362889, 766099, 1088667, 2298297, 6894891, 20684673]

約数ペア:

[(1, 20684673), (3, 6894891), (9, 2298297), (19, 1088667), (27, 766099), (57, 362889), (61, 339093), (171, 120963), (183, 113031), (513, 40321), (549, 37677), (661, 31293), (1159, 17847), (1647, 12559), (1983, 10431), (3477, 5949)]