18875528

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 23702392

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 83, 124, 131, 166, 217, 248, 262, 332, 434, 524, 581, 664, 868, 917, 1048, 1162, 1736, 1834, 2324, 2573, 3668, 4061, 4648, 5146, 7336, 8122, 10292, 10873, 16244, 18011, 20584, 21746, 28427, 32488, 36022, 43492, 56854, 72044, 76111, 86984, 113708, 144088, 152222, 227416, 304444, 337063, 608888, 674126, 1348252, 2359441, 2696504, 4718882, 9437764, 18875528]

約数ペア:

[(1, 18875528), (2, 9437764), (4, 4718882), (7, 2696504), (8, 2359441), (14, 1348252), (28, 674126), (31, 608888), (56, 337063), (62, 304444), (83, 227416), (124, 152222), (131, 144088), (166, 113708), (217, 86984), (248, 76111), (262, 72044), (332, 56854), (434, 43492), (524, 36022), (581, 32488), (664, 28427), (868, 21746), (917, 20584), (1048, 18011), (1162, 16244), (1736, 10873), (1834, 10292), (2324, 8122), (2573, 7336), (3668, 5146), (4061, 4648)]