21576291

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 33094656

約数和(自身を除く): 11518365

約数列:

[1, 3, 11, 33, 37, 41, 111, 123, 407, 431, 451, 1221, 1293, 1353, 1517, 4551, 4741, 14223, 15947, 16687, 17671, 47841, 50061, 53013, 175417, 194381, 526251, 583143, 653827, 1961481, 7192097, 21576291]

約数ペア:

[(1, 21576291), (3, 7192097), (11, 1961481), (33, 653827), (37, 583143), (41, 526251), (111, 194381), (123, 175417), (407, 53013), (431, 50061), (451, 47841), (1221, 17671), (1293, 16687), (1353, 15947), (1517, 14223), (4551, 4741)]