21217569

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^2$

素因数の和:229

約数の個数: 24

約数和(自身を含む): 30432576

約数和(自身を除く): 9215007

約数列:

[1, 3, 23, 61, 69, 71, 183, 213, 1403, 1633, 4209, 4331, 4899, 5041, 12993, 15123, 99613, 115943, 298839, 307501, 347829, 922503, 7072523, 21217569]

約数ペア:

[(1, 21217569), (3, 7072523), (23, 922503), (61, 347829), (69, 307501), (71, 298839), (183, 115943), (213, 99613), (1403, 15123), (1633, 12993), (4209, 5041), (4331, 4899)]