21520742

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{5807}}^1$

素因数の和:5935

約数の個数: 16

約数和(自身を含む): 34499520

約数和(自身を除く): 12978778

約数列:

[1, 2, 17, 34, 109, 218, 1853, 3706, 5807, 11614, 98719, 197438, 632963, 1265926, 10760371, 21520742]

約数ペア:

[(1, 21520742), (2, 10760371), (17, 1265926), (34, 632963), (109, 197438), (218, 98719), (1853, 11614), (3706, 5807)]