21802109

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{3739}}^1$

素因数の和:3777

約数の個数: 16

約数和(自身を含む): 26928000

約数和(自身を除く): 5125891

約数列:

[1, 7, 17, 49, 119, 343, 833, 3739, 5831, 26173, 63563, 183211, 444941, 1282477, 3114587, 21802109]

約数ペア:

[(1, 21802109), (7, 3114587), (17, 1282477), (49, 444941), (119, 183211), (343, 63563), (833, 26173), (3739, 5831)]