20455809

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{26951}}^1$

素因数の和:26988

約数の個数: 16

約数和(自身を含む): 31048704

約数和(自身を除く): 10592895

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 26951, 80853, 296461, 619873, 889383, 1859619, 6818603, 20455809]

約数ペア:

[(1, 20455809), (3, 6818603), (11, 1859619), (23, 889383), (33, 619873), (69, 296461), (253, 80853), (759, 26951)]