21907070

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{21269}}^1$

素因数の和:21379

約数の個数: 16

約数和(自身を含む): 39817440

約数和(自身を除く): 17910370

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 21269, 42538, 106345, 212690, 2190707, 4381414, 10953535, 21907070]

約数ペア:

[(1, 21907070), (2, 10953535), (5, 4381414), (10, 2190707), (103, 212690), (206, 106345), (515, 42538), (1030, 21269)]