21373785

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 39222144

約数和(自身を除く): 17848359

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 107, 115, 193, 207, 321, 345, 535, 579, 963, 965, 1035, 1605, 1737, 2461, 2895, 4439, 4815, 7383, 8685, 12305, 13317, 20651, 22149, 22195, 36915, 39951, 61953, 66585, 103255, 110745, 185859, 199755, 309765, 474973, 929295, 1424919, 2374865, 4274757, 7124595, 21373785]

約数ペア:

[(1, 21373785), (3, 7124595), (5, 4274757), (9, 2374865), (15, 1424919), (23, 929295), (45, 474973), (69, 309765), (107, 199755), (115, 185859), (193, 110745), (207, 103255), (321, 66585), (345, 61953), (535, 39951), (579, 36915), (963, 22195), (965, 22149), (1035, 20651), (1605, 13317), (1737, 12305), (2461, 8685), (2895, 7383), (4439, 4815)]