21592879

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:188

約数の個数: 32

約数和(自身を含む): 28224000

約数和(自身を除く): 6631121

約数列:

[1, 7, 11, 49, 59, 77, 97, 343, 413, 539, 649, 679, 1067, 2891, 3773, 4543, 4753, 5723, 7469, 20237, 31801, 33271, 40061, 52283, 62953, 222607, 280427, 365981, 440671, 1962989, 3084697, 21592879]

約数ペア:

[(1, 21592879), (7, 3084697), (11, 1962989), (49, 440671), (59, 365981), (77, 280427), (97, 222607), (343, 62953), (413, 52283), (539, 40061), (649, 33271), (679, 31801), (1067, 20237), (2891, 7469), (3773, 5723), (4543, 4753)]