21208363

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{487}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 24033024

約数和(自身を除く): 2824661

約数列:

[1, 11, 37, 107, 407, 487, 1177, 3959, 5357, 18019, 43549, 52109, 198209, 573199, 1928033, 21208363]

約数ペア:

[(1, 21208363), (11, 1928033), (37, 573199), (107, 198209), (407, 52109), (487, 43549), (1177, 18019), (3959, 5357)]