221765621

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1109}}^1$

素因数の和:1194

約数の個数: 32

約数和(自身を含む): 287712000

約数和(自身を除く): 65946379

約数列:

[1, 7, 11, 49, 53, 77, 343, 371, 539, 583, 1109, 2597, 3773, 4081, 7763, 12199, 18179, 28567, 54341, 58777, 85393, 199969, 380387, 411439, 597751, 646547, 2880073, 4184257, 4525829, 20160511, 31680803, 221765621]

約数ペア:

[(1, 221765621), (7, 31680803), (11, 20160511), (49, 4525829), (53, 4184257), (77, 2880073), (343, 646547), (371, 597751), (539, 411439), (583, 380387), (1109, 199969), (2597, 85393), (3773, 58777), (4081, 54341), (7763, 28567), (12199, 18179)]