21330274

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 20660126

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 53, 89, 106, 119, 133, 178, 238, 266, 323, 371, 623, 646, 742, 901, 1007, 1246, 1513, 1691, 1802, 2014, 2261, 3026, 3382, 4522, 4717, 6307, 7049, 9434, 10591, 11837, 12614, 14098, 17119, 21182, 23674, 28747, 33019, 34238, 57494, 66038, 80189, 89623, 119833, 160378, 179246, 201229, 239666, 402458, 561323, 627361, 1122646, 1254722, 1523591, 3047182, 10665137, 21330274]

約数ペア:

[(1, 21330274), (2, 10665137), (7, 3047182), (14, 1523591), (17, 1254722), (19, 1122646), (34, 627361), (38, 561323), (53, 402458), (89, 239666), (106, 201229), (119, 179246), (133, 160378), (178, 119833), (238, 89623), (266, 80189), (323, 66038), (371, 57494), (623, 34238), (646, 33019), (742, 28747), (901, 23674), (1007, 21182), (1246, 17119), (1513, 14098), (1691, 12614), (1802, 11837), (2014, 10591), (2261, 9434), (3026, 7049), (3382, 6307), (4522, 4717)]