81706520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41687}}^1$

素因数の和:41712

約数の個数: 48

約数和(自身を含む): 213859440

約数和(自身を除く): 132152920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41687, 83374, 166748, 208435, 291809, 333496, 416870, 583618, 833740, 1167236, 1459045, 1667480, 2042663, 2334472, 2918090, 4085326, 5836180, 8170652, 10213315, 11672360, 16341304, 20426630, 40853260, 81706520]

約数ペア:

[(1, 81706520), (2, 40853260), (4, 20426630), (5, 16341304), (7, 11672360), (8, 10213315), (10, 8170652), (14, 5836180), (20, 4085326), (28, 2918090), (35, 2334472), (40, 2042663), (49, 1667480), (56, 1459045), (70, 1167236), (98, 833740), (140, 583618), (196, 416870), (245, 333496), (280, 291809), (392, 208435), (490, 166748), (980, 83374), (1960, 41687)]