21455888

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10559}}^1$

素因数の和:10694

約数の個数: 20

約数和(自身を含む): 41902080

約数和(自身を除く): 20446192

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10559, 21118, 42236, 84472, 168944, 1340993, 2681986, 5363972, 10727944, 21455888]

約数ペア:

[(1, 21455888), (2, 10727944), (4, 5363972), (8, 2681986), (16, 1340993), (127, 168944), (254, 84472), (508, 42236), (1016, 21118), (2032, 10559)]