21205195

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{16763}}^1$

素因数の和:16802

約数の個数: 16

約数和(自身を含む): 28968192

約数和(自身を除く): 7762997

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 16763, 83815, 184393, 385549, 921965, 1927745, 4241039, 21205195]

約数ペア:

[(1, 21205195), (5, 4241039), (11, 1927745), (23, 921965), (55, 385549), (115, 184393), (253, 83815), (1265, 16763)]