18691959

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 31370976

約数和(自身を除く): 12679017

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 121, 143, 187, 221, 233, 363, 429, 561, 663, 699, 1573, 2057, 2431, 2563, 3029, 3961, 4719, 6171, 7293, 7689, 9087, 11883, 26741, 28193, 33319, 43571, 51493, 80223, 84579, 99957, 130713, 154479, 366509, 479281, 566423, 1099527, 1437843, 1699269, 6230653, 18691959]

約数ペア:

[(1, 18691959), (3, 6230653), (11, 1699269), (13, 1437843), (17, 1099527), (33, 566423), (39, 479281), (51, 366509), (121, 154479), (143, 130713), (187, 99957), (221, 84579), (233, 80223), (363, 51493), (429, 43571), (561, 33319), (663, 28193), (699, 26741), (1573, 11883), (2057, 9087), (2431, 7689), (2563, 7293), (3029, 6171), (3961, 4719)]