20387223

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:839

約数の個数: 24

約数和(自身を含む): 30981600

約数和(自身を除く): 10594377

約数列:

[1, 3, 9, 23, 69, 149, 207, 447, 661, 1341, 1983, 3427, 5949, 10281, 15203, 30843, 45609, 98489, 136827, 295467, 886401, 2265247, 6795741, 20387223]

約数ペア:

[(1, 20387223), (3, 6795741), (9, 2265247), (23, 886401), (69, 295467), (149, 136827), (207, 98489), (447, 45609), (661, 30843), (1341, 15203), (1983, 10281), (3427, 5949)]