21484671

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7759}}^1$

素因数の和:7846

約数の個数: 16

約数和(自身を含む): 31288320

約数和(自身を除く): 9803649

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7759, 23277, 100867, 302601, 550889, 1652667, 7161557, 21484671]

約数ペア:

[(1, 21484671), (3, 7161557), (13, 1652667), (39, 550889), (71, 302601), (213, 100867), (923, 23277), (2769, 7759)]