18720273

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{3967}}^1$

素因数の和:4005

約数の個数: 24

約数和(自身を含む): 29553664

約数和(自身を除く): 10833391

約数列:

[1, 3, 11, 13, 33, 39, 121, 143, 363, 429, 1573, 3967, 4719, 11901, 43637, 51571, 130911, 154713, 480007, 567281, 1440021, 1701843, 6240091, 18720273]

約数ペア:

[(1, 18720273), (3, 6240091), (11, 1701843), (13, 1440021), (33, 567281), (39, 480007), (121, 154713), (143, 130911), (363, 51571), (429, 43637), (1573, 11901), (3967, 4719)]