640994808

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{16787}}^1$

素因数の和:16876

約数の個数: 64

約数和(自身を含む): 1684172160

約数和(自身を除く): 1043177352

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 43, 74, 86, 111, 129, 148, 172, 222, 258, 296, 344, 444, 516, 888, 1032, 1591, 3182, 4773, 6364, 9546, 12728, 16787, 19092, 33574, 38184, 50361, 67148, 100722, 134296, 201444, 402888, 621119, 721841, 1242238, 1443682, 1863357, 2165523, 2484476, 2887364, 3726714, 4331046, 4968952, 5774728, 7453428, 8662092, 14906856, 17324184, 26708117, 53416234, 80124351, 106832468, 160248702, 213664936, 320497404, 640994808]

約数ペア:

[(1, 640994808), (2, 320497404), (3, 213664936), (4, 160248702), (6, 106832468), (8, 80124351), (12, 53416234), (24, 26708117), (37, 17324184), (43, 14906856), (74, 8662092), (86, 7453428), (111, 5774728), (129, 4968952), (148, 4331046), (172, 3726714), (222, 2887364), (258, 2484476), (296, 2165523), (344, 1863357), (444, 1443682), (516, 1242238), (888, 721841), (1032, 621119), (1591, 402888), (3182, 201444), (4773, 134296), (6364, 100722), (9546, 67148), (12728, 50361), (16787, 38184), (19092, 33574)]