21945231

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31667}}^1$

素因数の和:31691

約数の個数: 24

約数和(自身を含む): 39521664

約数和(自身を除く): 17576433

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 31667, 95001, 221669, 285003, 348337, 665007, 1045011, 1995021, 2438359, 3135033, 7315077, 21945231]

約数ペア:

[(1, 21945231), (3, 7315077), (7, 3135033), (9, 2438359), (11, 1995021), (21, 1045011), (33, 665007), (63, 348337), (77, 285003), (99, 221669), (231, 95001), (693, 31667)]