81413020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313127}}^1$

素因数の和:313149

約数の個数: 24

約数和(自身を含む): 184119264

約数和(自身を除く): 102706244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 313127, 626254, 1252508, 1565635, 3131270, 4070651, 6262540, 8141302, 16282604, 20353255, 40706510, 81413020]

約数ペア:

[(1, 81413020), (2, 40706510), (4, 20353255), (5, 16282604), (10, 8141302), (13, 6262540), (20, 4070651), (26, 3131270), (52, 1565635), (65, 1252508), (130, 626254), (260, 313127)]