21727209

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{14173}}^1$

素因数の和:14256

約数の個数: 16

約数和(自身を含む): 33564032

約数和(自身を除く): 11836823

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 14173, 42519, 99211, 297633, 1034629, 3103887, 7242403, 21727209]

約数ペア:

[(1, 21727209), (3, 7242403), (7, 3103887), (21, 1034629), (73, 297633), (219, 99211), (511, 42519), (1533, 14173)]