21379884

素因数分解:

$2^2\times 3^1\times {\mathrm{107}}^1\times {\mathrm{16651}}^1$

素因数の和:16765

約数の個数: 24

約数和(自身を含む): 50355648

約数和(自身を除く): 28975764

約数列:

[1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284, 16651, 33302, 49953, 66604, 99906, 199812, 1781657, 3563314, 5344971, 7126628, 10689942, 21379884]

約数ペア:

[(1, 21379884), (2, 10689942), (3, 7126628), (4, 5344971), (6, 3563314), (12, 1781657), (107, 199812), (214, 99906), (321, 66604), (428, 49953), (642, 33302), (1284, 16651)]