21290646

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{2551}}^1$

素因数の和:2676

約数の個数: 32

約数和(自身を含む): 46303488

約数和(自身を除く): 25012842

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 107, 214, 321, 642, 1391, 2551, 2782, 4173, 5102, 7653, 8346, 15306, 33163, 66326, 99489, 198978, 272957, 545914, 818871, 1637742, 3548441, 7096882, 10645323, 21290646]

約数ペア:

[(1, 21290646), (2, 10645323), (3, 7096882), (6, 3548441), (13, 1637742), (26, 818871), (39, 545914), (78, 272957), (107, 198978), (214, 99489), (321, 66326), (642, 33163), (1391, 15306), (2551, 8346), (2782, 7653), (4173, 5102)]