21266973

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1129}}^1$

素因数の和:1178

約数の個数: 48

約数和(自身を含む): 39486720

約数和(自身を除く): 18219747

約数列:

[1, 3, 7, 9, 13, 21, 23, 39, 63, 69, 91, 117, 161, 207, 273, 299, 483, 819, 897, 1129, 1449, 2093, 2691, 3387, 6279, 7903, 10161, 14677, 18837, 23709, 25967, 44031, 71127, 77901, 102739, 132093, 181769, 233703, 308217, 337571, 545307, 924651, 1012713, 1635921, 2362997, 3038139, 7088991, 21266973]

約数ペア:

[(1, 21266973), (3, 7088991), (7, 3038139), (9, 2362997), (13, 1635921), (21, 1012713), (23, 924651), (39, 545307), (63, 337571), (69, 308217), (91, 233703), (117, 181769), (161, 132093), (207, 102739), (273, 77901), (299, 71127), (483, 44031), (819, 25967), (897, 23709), (1129, 18837), (1449, 14677), (2093, 10161), (2691, 7903), (3387, 6279)]