89486380

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1\times {\mathrm{239}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 191640960

約数和(自身を除く): 102154580

約数列:

[1, 2, 4, 5, 10, 20, 97, 193, 194, 239, 386, 388, 478, 485, 772, 956, 965, 970, 1195, 1930, 1940, 2390, 3860, 4780, 18721, 23183, 37442, 46127, 46366, 74884, 92254, 92732, 93605, 115915, 184508, 187210, 230635, 231830, 374420, 461270, 463660, 922540, 4474319, 8948638, 17897276, 22371595, 44743190, 89486380]

約数ペア:

[(1, 89486380), (2, 44743190), (4, 22371595), (5, 17897276), (10, 8948638), (20, 4474319), (97, 922540), (193, 463660), (194, 461270), (239, 374420), (386, 231830), (388, 230635), (478, 187210), (485, 184508), (772, 115915), (956, 93605), (965, 92732), (970, 92254), (1195, 74884), (1930, 46366), (1940, 46127), (2390, 37442), (3860, 23183), (4780, 18721)]