18877869

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{479}}^1$

素因数の和:665

約数の個数: 24

約数和(自身を含む): 28454400

約数和(自身を除く): 9576531

約数列:

[1, 3, 9, 29, 87, 151, 261, 453, 479, 1359, 1437, 4311, 4379, 13137, 13891, 39411, 41673, 72329, 125019, 216987, 650961, 2097541, 6292623, 18877869]

約数ペア:

[(1, 18877869), (3, 6292623), (9, 2097541), (29, 650961), (87, 216987), (151, 125019), (261, 72329), (453, 41673), (479, 39411), (1359, 13891), (1437, 13137), (4311, 4379)]