40408640

素因数分解:

$2^6\times 5^1\times {\mathrm{197}}^1\times {\mathrm{641}}^1$

素因数の和:855

約数の個数: 56

約数和(自身を含む): 96862392

約数和(自身を除く): 56453752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 197, 320, 394, 641, 788, 985, 1282, 1576, 1970, 2564, 3152, 3205, 3940, 5128, 6304, 6410, 7880, 10256, 12608, 12820, 15760, 20512, 25640, 31520, 41024, 51280, 63040, 102560, 126277, 205120, 252554, 505108, 631385, 1010216, 1262770, 2020432, 2525540, 4040864, 5051080, 8081728, 10102160, 20204320, 40408640]

約数ペア:

[(1, 40408640), (2, 20204320), (4, 10102160), (5, 8081728), (8, 5051080), (10, 4040864), (16, 2525540), (20, 2020432), (32, 1262770), (40, 1010216), (64, 631385), (80, 505108), (160, 252554), (197, 205120), (320, 126277), (394, 102560), (641, 63040), (788, 51280), (985, 41024), (1282, 31520), (1576, 25640), (1970, 20512), (2564, 15760), (3152, 12820), (3205, 12608), (3940, 10256), (5128, 7880), (6304, 6410)]