21106519

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{601}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 25139520

約数和(自身を除く): 4033001

約数列:

[1, 7, 29, 173, 203, 601, 1211, 4207, 5017, 17429, 35119, 103973, 122003, 727811, 3015217, 21106519]

約数ペア:

[(1, 21106519), (7, 3015217), (29, 727811), (173, 122003), (203, 103973), (601, 35119), (1211, 17429), (4207, 5017)]