217718207

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{691}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 276357120

約数和(自身を除く): 58638913

約数列:

[1, 7, 19, 23, 103, 133, 161, 437, 691, 721, 1957, 2369, 3059, 4837, 13129, 13699, 15893, 16583, 45011, 71173, 91903, 111251, 301967, 315077, 498211, 1352287, 1636979, 2113769, 9466009, 11458853, 31102601, 217718207]

約数ペア:

[(1, 217718207), (7, 31102601), (19, 11458853), (23, 9466009), (103, 2113769), (133, 1636979), (161, 1352287), (437, 498211), (691, 315077), (721, 301967), (1957, 111251), (2369, 91903), (3059, 71173), (4837, 45011), (13129, 16583), (13699, 15893)]