20760805

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 27406080

約数和(自身を除く): 6645275

約数列:

[1, 5, 13, 65, 79, 169, 311, 395, 845, 1027, 1555, 4043, 5135, 13351, 20215, 24569, 52559, 66755, 122845, 262795, 319397, 1596985, 4152161, 20760805]

約数ペア:

[(1, 20760805), (5, 4152161), (13, 1596985), (65, 319397), (79, 262795), (169, 122845), (311, 66755), (395, 52559), (845, 24569), (1027, 20215), (1555, 13351), (4043, 5135)]