20553145

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1\times {\mathrm{571}}^1$

素因数の和:912

約数の個数: 16

約数和(自身を含む): 25863552

約数和(自身を除く): 5310407

約数列:

[1, 5, 23, 115, 313, 571, 1565, 2855, 7199, 13133, 35995, 65665, 178723, 893615, 4110629, 20553145]

約数ペア:

[(1, 20553145), (5, 4110629), (23, 893615), (115, 178723), (313, 65665), (571, 35995), (1565, 13133), (2855, 7199)]