21564585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4027}}^1$

素因数の和:4062

約数の個数: 48

約数和(自身を含む): 45242496

約数和(自身を除く): 23677911

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 4027, 5355, 12081, 20135, 28189, 36243, 60405, 68459, 84567, 140945, 181215, 205377, 253701, 342295, 422835, 479213, 616131, 1026885, 1268505, 1437639, 2396065, 3080655, 4312917, 7188195, 21564585]

約数ペア:

[(1, 21564585), (3, 7188195), (5, 4312917), (7, 3080655), (9, 2396065), (15, 1437639), (17, 1268505), (21, 1026885), (35, 616131), (45, 479213), (51, 422835), (63, 342295), (85, 253701), (105, 205377), (119, 181215), (153, 140945), (255, 84567), (315, 68459), (357, 60405), (595, 36243), (765, 28189), (1071, 20135), (1785, 12081), (4027, 5355)]