28126707

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 45504000

約数和(自身を除く): 17377293

約数列:

[1, 3, 7, 19, 21, 57, 133, 157, 399, 449, 471, 1099, 1347, 2983, 3143, 3297, 8531, 8949, 9429, 20881, 25593, 59717, 62643, 70493, 179151, 211479, 493451, 1339367, 1480353, 4018101, 9375569, 28126707]

約数ペア:

[(1, 28126707), (3, 9375569), (7, 4018101), (19, 1480353), (21, 1339367), (57, 493451), (133, 211479), (157, 179151), (399, 70493), (449, 62643), (471, 59717), (1099, 25593), (1347, 20881), (2983, 9429), (3143, 8949), (3297, 8531)]