21957130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168901}}^1$

素因数の和:168921

約数の個数: 16

約数和(自身を含む): 42563304

約数和(自身を除く): 20606174

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 168901, 337802, 844505, 1689010, 2195713, 4391426, 10978565, 21957130]

約数ペア:

[(1, 21957130), (2, 10978565), (5, 4391426), (10, 2195713), (13, 1689010), (26, 844505), (65, 337802), (130, 168901)]