18718911

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:292

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 10035009

約数列:

[1, 3, 9, 27, 53, 103, 127, 159, 309, 381, 477, 927, 1143, 1431, 2781, 3429, 5459, 6731, 13081, 16377, 20193, 39243, 49131, 60579, 117729, 147393, 181737, 353187, 693293, 2079879, 6239637, 18718911]

約数ペア:

[(1, 18718911), (3, 6239637), (9, 2079879), (27, 693293), (53, 353187), (103, 181737), (127, 147393), (159, 117729), (309, 60579), (381, 49131), (477, 39243), (927, 20193), (1143, 16377), (1431, 13081), (2781, 6731), (3429, 5459)]