21388347

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{139}}^2$

素因数の和:328

約数の個数: 24

約数和(自身を含む): 32694480

約数和(自身を除く): 11306133

約数列:

[1, 3, 9, 27, 41, 123, 139, 369, 417, 1107, 1251, 3753, 5699, 17097, 19321, 51291, 57963, 153873, 173889, 521667, 792161, 2376483, 7129449, 21388347]

約数ペア:

[(1, 21388347), (3, 7129449), (9, 2376483), (27, 792161), (41, 521667), (123, 173889), (139, 153873), (369, 57963), (417, 51291), (1107, 19321), (1251, 17097), (3753, 5699)]