12940263

素因数分解:

$3^3\times 7^2\times {\mathrm{9781}}^1$

素因数の和:9804

約数の個数: 24

約数和(自身を含む): 22302960

約数和(自身を除く): 9362697

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 9781, 29343, 68467, 88029, 205401, 264087, 479269, 616203, 1437807, 1848609, 4313421, 12940263]

約数ペア:

[(1, 12940263), (3, 4313421), (7, 1848609), (9, 1437807), (21, 616203), (27, 479269), (49, 264087), (63, 205401), (147, 88029), (189, 68467), (441, 29343), (1323, 9781)]