81477400

素因数分解:

$2^3\times 5^2\times {\mathrm{263}}^1\times {\mathrm{1549}}^1$

素因数の和:1828

約数の個数: 48

約数和(自身を含む): 190278000

約数和(自身を除く): 108800600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 263, 526, 1052, 1315, 1549, 2104, 2630, 3098, 5260, 6196, 6575, 7745, 10520, 12392, 13150, 15490, 26300, 30980, 38725, 52600, 61960, 77450, 154900, 309800, 407387, 814774, 1629548, 2036935, 3259096, 4073870, 8147740, 10184675, 16295480, 20369350, 40738700, 81477400]

約数ペア:

[(1, 81477400), (2, 40738700), (4, 20369350), (5, 16295480), (8, 10184675), (10, 8147740), (20, 4073870), (25, 3259096), (40, 2036935), (50, 1629548), (100, 814774), (200, 407387), (263, 309800), (526, 154900), (1052, 77450), (1315, 61960), (1549, 52600), (2104, 38725), (2630, 30980), (3098, 26300), (5260, 15490), (6196, 13150), (6575, 12392), (7745, 10520)]