18820624

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 38390400

約数和(自身を除く): 19569776

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 199, 257, 368, 398, 514, 796, 1028, 1592, 2056, 3184, 4112, 4577, 5911, 9154, 11822, 18308, 23644, 36616, 47288, 51143, 73232, 94576, 102286, 204572, 409144, 818288, 1176289, 2352578, 4705156, 9410312, 18820624]

約数ペア:

[(1, 18820624), (2, 9410312), (4, 4705156), (8, 2352578), (16, 1176289), (23, 818288), (46, 409144), (92, 204572), (184, 102286), (199, 94576), (257, 73232), (368, 51143), (398, 47288), (514, 36616), (796, 23644), (1028, 18308), (1592, 11822), (2056, 9154), (3184, 5911), (4112, 4577)]