320440988

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:451

約数の個数: 72

約数和(自身を含む): 674361072

約数和(自身を除く): 353920084

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 193, 196, 197, 301, 386, 394, 602, 772, 788, 1204, 1351, 1379, 2107, 2702, 2758, 4214, 5404, 5516, 8299, 8428, 8471, 9457, 9653, 16598, 16942, 18914, 19306, 33196, 33884, 37828, 38021, 38612, 58093, 59297, 76042, 116186, 118594, 152084, 232372, 237188, 266147, 406651, 415079, 532294, 813302, 830158, 1064588, 1626604, 1634903, 1660316, 1863029, 3269806, 3726058, 6539612, 7452116, 11444321, 22888642, 45777284, 80110247, 160220494, 320440988]

約数ペア:

[(1, 320440988), (2, 160220494), (4, 80110247), (7, 45777284), (14, 22888642), (28, 11444321), (43, 7452116), (49, 6539612), (86, 3726058), (98, 3269806), (172, 1863029), (193, 1660316), (196, 1634903), (197, 1626604), (301, 1064588), (386, 830158), (394, 813302), (602, 532294), (772, 415079), (788, 406651), (1204, 266147), (1351, 237188), (1379, 232372), (2107, 152084), (2702, 118594), (2758, 116186), (4214, 76042), (5404, 59297), (5516, 58093), (8299, 38612), (8428, 38021), (8471, 37828), (9457, 33884), (9653, 33196), (16598, 19306), (16942, 18914)]