131111260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{353}}^1\times {\mathrm{379}}^1$

素因数の和:755

約数の個数: 72

約数和(自身を含む): 322040880

約数和(自身を除く): 190929620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 353, 379, 490, 706, 758, 980, 1412, 1516, 1765, 1895, 2471, 2653, 3530, 3790, 4942, 5306, 7060, 7580, 9884, 10612, 12355, 13265, 17297, 18571, 24710, 26530, 34594, 37142, 49420, 53060, 69188, 74284, 86485, 92855, 133787, 172970, 185710, 267574, 345940, 371420, 535148, 668935, 936509, 1337870, 1873018, 2675740, 3746036, 4682545, 6555563, 9365090, 13111126, 18730180, 26222252, 32777815, 65555630, 131111260]

約数ペア:

[(1, 131111260), (2, 65555630), (4, 32777815), (5, 26222252), (7, 18730180), (10, 13111126), (14, 9365090), (20, 6555563), (28, 4682545), (35, 3746036), (49, 2675740), (70, 1873018), (98, 1337870), (140, 936509), (196, 668935), (245, 535148), (353, 371420), (379, 345940), (490, 267574), (706, 185710), (758, 172970), (980, 133787), (1412, 92855), (1516, 86485), (1765, 74284), (1895, 69188), (2471, 53060), (2653, 49420), (3530, 37142), (3790, 34594), (4942, 26530), (5306, 24710), (7060, 18571), (7580, 17297), (9884, 13265), (10612, 12355)]