72637480

素因数分解:

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

素因数の和:398

約数の個数: 48

約数和(自身を含む): 165992220

約数和(自身を除く): 93354740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 193, 194, 386, 388, 485, 772, 776, 965, 970, 1544, 1930, 1940, 3860, 3880, 7720, 9409, 18721, 18818, 37442, 37636, 47045, 74884, 75272, 93605, 94090, 149768, 187210, 188180, 374420, 376360, 748840, 1815937, 3631874, 7263748, 9079685, 14527496, 18159370, 36318740, 72637480]

約数ペア:

[(1, 72637480), (2, 36318740), (4, 18159370), (5, 14527496), (8, 9079685), (10, 7263748), (20, 3631874), (40, 1815937), (97, 748840), (193, 376360), (194, 374420), (386, 188180), (388, 187210), (485, 149768), (772, 94090), (776, 93605), (965, 75272), (970, 74884), (1544, 47045), (1930, 37636), (1940, 37442), (3860, 18818), (3880, 18721), (7720, 9409)]