21239752

素因数分解:

$2^3\times {\mathrm{197}}^1\times {\mathrm{13477}}^1$

素因数の和:13680

約数の個数: 16

約数和(自身を含む): 40029660

約数和(自身を除く): 18789908

約数列:

[1, 2, 4, 8, 197, 394, 788, 1576, 13477, 26954, 53908, 107816, 2654969, 5309938, 10619876, 21239752]

約数ペア:

[(1, 21239752), (2, 10619876), (4, 5309938), (8, 2654969), (197, 107816), (394, 53908), (788, 26954), (1576, 13477)]