388648640

素因数分解:

$2^6\times 5^1\times {\mathrm{47}}^1\times {\mathrm{25841}}^1$

素因数の和:25905

約数の個数: 56

約数和(自身を含む): 945196992

約数和(自身を除く): 556548352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 160, 188, 235, 320, 376, 470, 752, 940, 1504, 1880, 3008, 3760, 7520, 15040, 25841, 51682, 103364, 129205, 206728, 258410, 413456, 516820, 826912, 1033640, 1214527, 1653824, 2067280, 2429054, 4134560, 4858108, 6072635, 8269120, 9716216, 12145270, 19432432, 24290540, 38864864, 48581080, 77729728, 97162160, 194324320, 388648640]

約数ペア:

[(1, 388648640), (2, 194324320), (4, 97162160), (5, 77729728), (8, 48581080), (10, 38864864), (16, 24290540), (20, 19432432), (32, 12145270), (40, 9716216), (47, 8269120), (64, 6072635), (80, 4858108), (94, 4134560), (160, 2429054), (188, 2067280), (235, 1653824), (320, 1214527), (376, 1033640), (470, 826912), (752, 516820), (940, 413456), (1504, 258410), (1880, 206728), (3008, 129205), (3760, 103364), (7520, 51682), (15040, 25841)]