81673740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2351}}^1$

素因数の和:2559

約数の個数: 72

約数和(自身を含む): 249133248

約数和(自身を除く): 167459508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 193, 386, 579, 772, 965, 1158, 1737, 1930, 2316, 2351, 2895, 3474, 3860, 4702, 5790, 6948, 7053, 8685, 9404, 11580, 11755, 14106, 17370, 21159, 23510, 28212, 34740, 35265, 42318, 47020, 70530, 84636, 105795, 141060, 211590, 423180, 453743, 907486, 1361229, 1814972, 2268715, 2722458, 4083687, 4537430, 5444916, 6806145, 8167374, 9074860, 13612290, 16334748, 20418435, 27224580, 40836870, 81673740]

約数ペア:

[(1, 81673740), (2, 40836870), (3, 27224580), (4, 20418435), (5, 16334748), (6, 13612290), (9, 9074860), (10, 8167374), (12, 6806145), (15, 5444916), (18, 4537430), (20, 4083687), (30, 2722458), (36, 2268715), (45, 1814972), (60, 1361229), (90, 907486), (180, 453743), (193, 423180), (386, 211590), (579, 141060), (772, 105795), (965, 84636), (1158, 70530), (1737, 47020), (1930, 42318), (2316, 35265), (2351, 34740), (2895, 28212), (3474, 23510), (3860, 21159), (4702, 17370), (5790, 14106), (6948, 11755), (7053, 11580), (8685, 9404)]