64068280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{193}}^2$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 148274280

約数和(自身を除く): 84206000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 193, 215, 344, 386, 430, 772, 860, 965, 1544, 1720, 1930, 3860, 7720, 8299, 16598, 33196, 37249, 41495, 66392, 74498, 82990, 148996, 165980, 186245, 297992, 331960, 372490, 744980, 1489960, 1601707, 3203414, 6406828, 8008535, 12813656, 16017070, 32034140, 64068280]

約数ペア:

[(1, 64068280), (2, 32034140), (4, 16017070), (5, 12813656), (8, 8008535), (10, 6406828), (20, 3203414), (40, 1601707), (43, 1489960), (86, 744980), (172, 372490), (193, 331960), (215, 297992), (344, 186245), (386, 165980), (430, 148996), (772, 82990), (860, 74498), (965, 66392), (1544, 41495), (1720, 37249), (1930, 33196), (3860, 16598), (7720, 8299)]