28688211

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{439}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 42625440

約数和(自身を除く): 13937229

約数列:

[1, 3, 9, 53, 137, 159, 411, 439, 477, 1233, 1317, 3951, 7261, 21783, 23267, 60143, 65349, 69801, 180429, 209403, 541287, 3187579, 9562737, 28688211]

約数ペア:

[(1, 28688211), (3, 9562737), (9, 3187579), (53, 541287), (137, 209403), (159, 180429), (411, 69801), (439, 65349), (477, 60143), (1233, 23267), (1317, 21783), (3951, 7261)]