28539784

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 66528000

約数和(自身を除く): 37988216

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 197, 199, 364, 394, 398, 728, 788, 796, 1379, 1393, 1576, 1592, 2561, 2587, 2758, 2786, 5122, 5174, 5516, 5572, 10244, 10348, 11032, 11144, 17927, 18109, 20488, 20696, 35854, 36218, 39203, 71708, 72436, 78406, 143416, 144872, 156812, 274421, 313624, 509639, 548842, 1019278, 1097684, 2038556, 2195368, 3567473, 4077112, 7134946, 14269892, 28539784]

約数ペア:

[(1, 28539784), (2, 14269892), (4, 7134946), (7, 4077112), (8, 3567473), (13, 2195368), (14, 2038556), (26, 1097684), (28, 1019278), (52, 548842), (56, 509639), (91, 313624), (104, 274421), (182, 156812), (197, 144872), (199, 143416), (364, 78406), (394, 72436), (398, 71708), (728, 39203), (788, 36218), (796, 35854), (1379, 20696), (1393, 20488), (1576, 18109), (1592, 17927), (2561, 11144), (2587, 11032), (2758, 10348), (2786, 10244), (5122, 5572), (5174, 5516)]