16680976

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:264

約数の個数: 60

約数和(自身を含む): 36307200

約数和(自身を除く): 19626224

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 169, 199, 208, 248, 338, 398, 403, 496, 676, 796, 806, 1352, 1592, 1612, 2587, 2704, 3184, 3224, 5174, 5239, 6169, 6448, 10348, 10478, 12338, 20696, 20956, 24676, 33631, 41392, 41912, 49352, 67262, 80197, 83824, 98704, 134524, 160394, 269048, 320788, 538096, 641576, 1042561, 1283152, 2085122, 4170244, 8340488, 16680976]

約数ペア:

[(1, 16680976), (2, 8340488), (4, 4170244), (8, 2085122), (13, 1283152), (16, 1042561), (26, 641576), (31, 538096), (52, 320788), (62, 269048), (104, 160394), (124, 134524), (169, 98704), (199, 83824), (208, 80197), (248, 67262), (338, 49352), (398, 41912), (403, 41392), (496, 33631), (676, 24676), (796, 20956), (806, 20696), (1352, 12338), (1592, 10478), (1612, 10348), (2587, 6448), (2704, 6169), (3184, 5239), (3224, 5174)]