318291281

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1\times {\mathrm{233}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 404621568

約数和(自身を除く): 86330287

約数列:

[1, 7, 11, 77, 113, 157, 233, 791, 1099, 1243, 1631, 1727, 2563, 8701, 12089, 17741, 17941, 26329, 36581, 124187, 184303, 195151, 256067, 289619, 402391, 1366057, 2027333, 2816737, 4133653, 28935571, 45470183, 318291281]

約数ペア:

[(1, 318291281), (7, 45470183), (11, 28935571), (77, 4133653), (113, 2816737), (157, 2027333), (233, 1366057), (791, 402391), (1099, 289619), (1243, 256067), (1631, 195151), (1727, 184303), (2563, 124187), (8701, 36581), (12089, 26329), (17741, 17941)]