18908318

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3889}}^1$

素因数の和:3932

約数の個数: 32

約数和(自身を含む): 35290080

約数和(自身を除く): 16381762

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 143, 187, 221, 286, 374, 442, 2431, 3889, 4862, 7778, 42779, 50557, 66113, 85558, 101114, 132226, 556127, 727243, 859469, 1112254, 1454486, 1718938, 9454159, 18908318]

約数ペア:

[(1, 18908318), (2, 9454159), (11, 1718938), (13, 1454486), (17, 1112254), (22, 859469), (26, 727243), (34, 556127), (143, 132226), (187, 101114), (221, 85558), (286, 66113), (374, 50557), (442, 42779), (2431, 7778), (3889, 4862)]