31149981

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{487}}^1$

素因数の和:622

約数の個数: 32

約数和(自身を含む): 48721920

約数和(自身を除く): 17571939

約数列:

[1, 3, 9, 23, 27, 69, 103, 207, 309, 487, 621, 927, 1461, 2369, 2781, 4383, 7107, 11201, 13149, 21321, 33603, 50161, 63963, 100809, 150483, 302427, 451449, 1153703, 1354347, 3461109, 10383327, 31149981]

約数ペア:

[(1, 31149981), (3, 10383327), (9, 3461109), (23, 1354347), (27, 1153703), (69, 451449), (103, 302427), (207, 150483), (309, 100809), (487, 63963), (621, 50161), (927, 33603), (1461, 21321), (2369, 13149), (2781, 11201), (4383, 7107)]