890221724

素因数分解:

$2^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1\times {\mathrm{811}}^1$

素因数の和:1218

約数の個数: 48

約数和(自身を含む): 1800691200

約数和(自身を除く): 910469476

約数列:

[1, 2, 4, 7, 14, 28, 197, 199, 394, 398, 788, 796, 811, 1379, 1393, 1622, 2758, 2786, 3244, 5516, 5572, 5677, 11354, 22708, 39203, 78406, 156812, 159767, 161389, 274421, 319534, 322778, 548842, 639068, 645556, 1097684, 1118369, 1129723, 2236738, 2259446, 4473476, 4518892, 31793633, 63587266, 127174532, 222555431, 445110862, 890221724]

約数ペア:

[(1, 890221724), (2, 445110862), (4, 222555431), (7, 127174532), (14, 63587266), (28, 31793633), (197, 4518892), (199, 4473476), (394, 2259446), (398, 2236738), (788, 1129723), (796, 1118369), (811, 1097684), (1379, 645556), (1393, 639068), (1622, 548842), (2758, 322778), (2786, 319534), (3244, 274421), (5516, 161389), (5572, 159767), (5677, 156812), (11354, 78406), (22708, 39203)]