20889651

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{2749}}^1$

素因数の和:2918

約数の個数: 16

約数和(自身を含む): 29700000

約数和(自身を除く): 8810349

約数列:

[1, 3, 17, 51, 149, 447, 2533, 2749, 7599, 8247, 46733, 140199, 409601, 1228803, 6963217, 20889651]

約数ペア:

[(1, 20889651), (3, 6963217), (17, 1228803), (51, 409601), (149, 140199), (447, 46733), (2533, 8247), (2749, 7599)]