20540728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197507}}^1$

素因数の和:197526

約数の個数: 16

約数和(自身を含む): 41476680

約数和(自身を除く): 20935952

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197507, 395014, 790028, 1580056, 2567591, 5135182, 10270364, 20540728]

約数ペア:

[(1, 20540728), (2, 10270364), (4, 5135182), (8, 2567591), (13, 1580056), (26, 790028), (52, 395014), (104, 197507)]