18396784

素因数分解:

$2^4\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1979}}^1$

素因数の和:2077

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 22850576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 83, 112, 166, 332, 581, 664, 1162, 1328, 1979, 2324, 3958, 4648, 7916, 9296, 13853, 15832, 27706, 31664, 55412, 110824, 164257, 221648, 328514, 657028, 1149799, 1314056, 2299598, 2628112, 4599196, 9198392, 18396784]

約数ペア:

[(1, 18396784), (2, 9198392), (4, 4599196), (7, 2628112), (8, 2299598), (14, 1314056), (16, 1149799), (28, 657028), (56, 328514), (83, 221648), (112, 164257), (166, 110824), (332, 55412), (581, 31664), (664, 27706), (1162, 15832), (1328, 13853), (1979, 9296), (2324, 7916), (3958, 4648)]