21193249

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{613}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 26524800

約数和(自身を除く): 5331551

約数列:

[1, 7, 11, 77, 449, 613, 3143, 4291, 4939, 6743, 34573, 47201, 275237, 1926659, 3027607, 21193249]

約数ペア:

[(1, 21193249), (7, 3027607), (11, 1926659), (77, 275237), (449, 47201), (613, 34573), (3143, 6743), (4291, 4939)]