21407589

素因数分解:

$3^2\times 7^1\times {\mathrm{373}}^1\times {\mathrm{911}}^1$

素因数の和:1297

約数の個数: 24

約数和(自身を含む): 35473152

約数和(自身を除く): 14065563

約数列:

[1, 3, 7, 9, 21, 63, 373, 911, 1119, 2611, 2733, 3357, 6377, 7833, 8199, 19131, 23499, 57393, 339803, 1019409, 2378621, 3058227, 7135863, 21407589]

約数ペア:

[(1, 21407589), (3, 7135863), (7, 3058227), (9, 2378621), (21, 1019409), (63, 339803), (373, 57393), (911, 23499), (1119, 19131), (2611, 8199), (2733, 7833), (3357, 6377)]