159888920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{193}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 366660000

約数和(自身を除く): 206771080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 149, 193, 278, 298, 386, 556, 596, 695, 745, 772, 965, 1112, 1192, 1390, 1490, 1544, 1930, 2780, 2980, 3860, 5560, 5960, 7720, 20711, 26827, 28757, 41422, 53654, 57514, 82844, 103555, 107308, 115028, 134135, 143785, 165688, 207110, 214616, 230056, 268270, 287570, 414220, 536540, 575140, 828440, 1073080, 1150280, 3997223, 7994446, 15988892, 19986115, 31977784, 39972230, 79944460, 159888920]

約数ペア:

[(1, 159888920), (2, 79944460), (4, 39972230), (5, 31977784), (8, 19986115), (10, 15988892), (20, 7994446), (40, 3997223), (139, 1150280), (149, 1073080), (193, 828440), (278, 575140), (298, 536540), (386, 414220), (556, 287570), (596, 268270), (695, 230056), (745, 214616), (772, 207110), (965, 165688), (1112, 143785), (1192, 134135), (1390, 115028), (1490, 107308), (1544, 103555), (1930, 82844), (2780, 57514), (2980, 53654), (3860, 41422), (5560, 28757), (5960, 26827), (7720, 20711)]