90247090

素因数分解:

$2^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{20939}}^1$

素因数の和:21377

約数の個数: 16

約数和(自身を含む): 162829440

約数和(自身を除く): 72582350

約数列:

[1, 2, 5, 10, 431, 862, 2155, 4310, 20939, 41878, 104695, 209390, 9024709, 18049418, 45123545, 90247090]

約数ペア:

[(1, 90247090), (2, 45123545), (5, 18049418), (10, 9024709), (431, 209390), (862, 104695), (2155, 41878), (4310, 20939)]