21909239

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:610

約数の個数: 16

約数和(自身を含む): 24930720

約数和(自身を除く): 3021481

約数列:

[1, 11, 29, 173, 319, 397, 1903, 4367, 5017, 11513, 55187, 68681, 126643, 755491, 1991749, 21909239]

約数ペア:

[(1, 21909239), (11, 1991749), (29, 755491), (173, 126643), (319, 68681), (397, 55187), (1903, 11513), (4367, 5017)]