81131260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82787}}^1$

素因数の和:82810

約数の個数: 36

約数和(自身を含む): 198194472

約数和(自身を除く): 117063212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82787, 165574, 331148, 413935, 579509, 827870, 1159018, 1655740, 2318036, 2897545, 4056563, 5795090, 8113126, 11590180, 16226252, 20282815, 40565630, 81131260]

約数ペア:

[(1, 81131260), (2, 40565630), (4, 20282815), (5, 16226252), (7, 11590180), (10, 8113126), (14, 5795090), (20, 4056563), (28, 2897545), (35, 2318036), (49, 1655740), (70, 1159018), (98, 827870), (140, 579509), (196, 413935), (245, 331148), (490, 165574), (980, 82787)]