291298760

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 667321200

約数和(自身を除く): 376022440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 193, 194, 386, 388, 389, 485, 772, 776, 778, 965, 970, 1544, 1556, 1930, 1940, 1945, 3112, 3860, 3880, 3890, 7720, 7780, 15560, 18721, 37442, 37733, 74884, 75077, 75466, 93605, 149768, 150154, 150932, 187210, 188665, 300308, 301864, 374420, 375385, 377330, 600616, 748840, 750770, 754660, 1501540, 1509320, 3003080, 7282469, 14564938, 29129876, 36412345, 58259752, 72824690, 145649380, 291298760]

約数ペア:

[(1, 291298760), (2, 145649380), (4, 72824690), (5, 58259752), (8, 36412345), (10, 29129876), (20, 14564938), (40, 7282469), (97, 3003080), (193, 1509320), (194, 1501540), (386, 754660), (388, 750770), (389, 748840), (485, 600616), (772, 377330), (776, 375385), (778, 374420), (965, 301864), (970, 300308), (1544, 188665), (1556, 187210), (1930, 150932), (1940, 150154), (1945, 149768), (3112, 93605), (3860, 75466), (3880, 75077), (3890, 74884), (7720, 37733), (7780, 37442), (15560, 18721)]