20447523

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{499}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 30810000

約数和(自身を除く): 10362477

約数列:

[1, 3, 9, 29, 87, 157, 261, 471, 499, 1413, 1497, 4491, 4553, 13659, 14471, 40977, 43413, 78343, 130239, 235029, 705087, 2271947, 6815841, 20447523]

約数ペア:

[(1, 20447523), (3, 6815841), (9, 2271947), (29, 705087), (87, 235029), (157, 130239), (261, 78343), (471, 43413), (499, 40977), (1413, 14471), (1497, 13659), (4491, 4553)]