40811780

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 87835440

約数和(自身を除く): 47023660

約数列:

[1, 2, 4, 5, 10, 20, 97, 109, 193, 194, 218, 386, 388, 436, 485, 545, 772, 965, 970, 1090, 1930, 1940, 2180, 3860, 10573, 18721, 21037, 21146, 37442, 42074, 42292, 52865, 74884, 84148, 93605, 105185, 105730, 187210, 210370, 211460, 374420, 420740, 2040589, 4081178, 8162356, 10202945, 20405890, 40811780]

約数ペア:

[(1, 40811780), (2, 20405890), (4, 10202945), (5, 8162356), (10, 4081178), (20, 2040589), (97, 420740), (109, 374420), (193, 211460), (194, 210370), (218, 187210), (386, 105730), (388, 105185), (436, 93605), (485, 84148), (545, 74884), (772, 52865), (965, 42292), (970, 42074), (1090, 37442), (1930, 21146), (1940, 21037), (2180, 18721), (3860, 10573)]