77218720

素因数分解:

$2^5\times 5^1\times {\mathrm{487}}^1\times {\mathrm{991}}^1$

素因数の和:1493

約数の個数: 48

約数和(自身を含む): 182988288

約数和(自身を除く): 105769568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 487, 974, 991, 1948, 1982, 2435, 3896, 3964, 4870, 4955, 7792, 7928, 9740, 9910, 15584, 15856, 19480, 19820, 31712, 38960, 39640, 77920, 79280, 158560, 482617, 965234, 1930468, 2413085, 3860936, 4826170, 7721872, 9652340, 15443744, 19304680, 38609360, 77218720]

約数ペア:

[(1, 77218720), (2, 38609360), (4, 19304680), (5, 15443744), (8, 9652340), (10, 7721872), (16, 4826170), (20, 3860936), (32, 2413085), (40, 1930468), (80, 965234), (160, 482617), (487, 158560), (974, 79280), (991, 77920), (1948, 39640), (1982, 38960), (2435, 31712), (3896, 19820), (3964, 19480), (4870, 15856), (4955, 15584), (7792, 9910), (7928, 9740)]