21548769

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 12924831

約数列:

[1, 3, 11, 23, 29, 33, 69, 87, 89, 121, 253, 267, 319, 363, 667, 759, 957, 979, 2001, 2047, 2581, 2783, 2937, 3509, 6141, 7337, 7743, 8349, 10527, 10769, 22011, 22517, 28391, 32307, 59363, 67551, 80707, 85173, 178089, 242121, 247687, 312301, 652993, 743061, 936903, 1958979, 7182923, 21548769]

約数ペア:

[(1, 21548769), (3, 7182923), (11, 1958979), (23, 936903), (29, 743061), (33, 652993), (69, 312301), (87, 247687), (89, 242121), (121, 178089), (253, 85173), (267, 80707), (319, 67551), (363, 59363), (667, 32307), (759, 28391), (957, 22517), (979, 22011), (2001, 10769), (2047, 10527), (2581, 8349), (2783, 7743), (2937, 7337), (3509, 6141)]