21456976

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{293}}^1$

素因数の和:523

約数の個数: 40

約数和(自身を含む): 43747200

約数和(自身を除く): 22290224

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 199, 293, 368, 398, 586, 796, 1172, 1592, 2344, 3184, 4577, 4688, 6739, 9154, 13478, 18308, 26956, 36616, 53912, 58307, 73232, 107824, 116614, 233228, 466456, 932912, 1341061, 2682122, 5364244, 10728488, 21456976]

約数ペア:

[(1, 21456976), (2, 10728488), (4, 5364244), (8, 2682122), (16, 1341061), (23, 932912), (46, 466456), (92, 233228), (184, 116614), (199, 107824), (293, 73232), (368, 58307), (398, 53912), (586, 36616), (796, 26956), (1172, 18308), (1592, 13478), (2344, 9154), (3184, 6739), (4577, 4688)]