21128877

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10163}}^1$

素因数の和:10190

約数の個数: 32

約数和(自身を含む): 39029760

約数和(自身を除く): 17900883

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10163, 30489, 71141, 91467, 111793, 213423, 274401, 335379, 640269, 782551, 1006137, 1920807, 2347653, 3018411, 7042959, 21128877]

約数ペア:

[(1, 21128877), (3, 7042959), (7, 3018411), (9, 2347653), (11, 1920807), (21, 1006137), (27, 782551), (33, 640269), (63, 335379), (77, 274401), (99, 213423), (189, 111793), (231, 91467), (297, 71141), (693, 30489), (2079, 10163)]