20395431

素因数分解:

$3^2\times 7^1\times {\mathrm{523}}^1\times {\mathrm{619}}^1$

素因数の和:1155

約数の個数: 24

約数和(自身を含む): 33787520

約数和(自身を除く): 13392089

約数列:

[1, 3, 7, 9, 21, 63, 523, 619, 1569, 1857, 3661, 4333, 4707, 5571, 10983, 12999, 32949, 38997, 323737, 971211, 2266159, 2913633, 6798477, 20395431]

約数ペア:

[(1, 20395431), (3, 6798477), (7, 2913633), (9, 2266159), (21, 971211), (63, 323737), (523, 38997), (619, 32949), (1569, 12999), (1857, 10983), (3661, 5571), (4333, 4707)]