20845136

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{593}}^1$

素因数の和:640

約数の個数: 40

約数和(自身を含む): 43825320

約数和(自身を除く): 22980184

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 593, 676, 1186, 1352, 2197, 2372, 2704, 4394, 4744, 7709, 8788, 9488, 15418, 17576, 30836, 35152, 61672, 100217, 123344, 200434, 400868, 801736, 1302821, 1603472, 2605642, 5211284, 10422568, 20845136]

約数ペア:

[(1, 20845136), (2, 10422568), (4, 5211284), (8, 2605642), (13, 1603472), (16, 1302821), (26, 801736), (52, 400868), (104, 200434), (169, 123344), (208, 100217), (338, 61672), (593, 35152), (676, 30836), (1186, 17576), (1352, 15418), (2197, 9488), (2372, 8788), (2704, 7709), (4394, 4744)]