21000570577

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{241}}^1\times {\mathrm{1433}}^1$

素因数の和:1778

約数の個数: 48

約数和(自身を含む): 26347753872

約数和(自身を除く): 5347183295

約数列:

[1, 7, 17, 49, 73, 119, 241, 511, 833, 1241, 1433, 1687, 3577, 4097, 8687, 10031, 11809, 17593, 24361, 28679, 60809, 70217, 104609, 123151, 170527, 200753, 299081, 345353, 732263, 862057, 1193689, 1778353, 2093567, 2417471, 5125841, 5871001, 12448471, 14654969, 16922297, 25210769, 41097007, 87139297, 176475383, 287679049, 428583073, 1235327681, 3000081511, 21000570577]

約数ペア:

[(1, 21000570577), (7, 3000081511), (17, 1235327681), (49, 428583073), (73, 287679049), (119, 176475383), (241, 87139297), (511, 41097007), (833, 25210769), (1241, 16922297), (1433, 14654969), (1687, 12448471), (3577, 5871001), (4097, 5125841), (8687, 2417471), (10031, 2093567), (11809, 1778353), (17593, 1193689), (24361, 862057), (28679, 732263), (60809, 345353), (70217, 299081), (104609, 200753), (123151, 170527)]