78488020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{301877}}^1$

素因数の和:301899

約数の個数: 24

約数和(自身を含む): 177504264

約数和(自身を除く): 99016244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 301877, 603754, 1207508, 1509385, 3018770, 3924401, 6037540, 7848802, 15697604, 19622005, 39244010, 78488020]

約数ペア:

[(1, 78488020), (2, 39244010), (4, 19622005), (5, 15697604), (10, 7848802), (13, 6037540), (20, 3924401), (26, 3018770), (52, 1509385), (65, 1207508), (130, 603754), (260, 301877)]