42378640

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2689}}^1$

素因数の和:2899

約数の個数: 40

約数和(自身を含む): 99067320

約数和(自身を除く): 56688680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 2689, 3152, 3940, 5378, 7880, 10756, 13445, 15760, 21512, 26890, 43024, 53780, 107560, 215120, 529733, 1059466, 2118932, 2648665, 4237864, 5297330, 8475728, 10594660, 21189320, 42378640]

約数ペア:

[(1, 42378640), (2, 21189320), (4, 10594660), (5, 8475728), (8, 5297330), (10, 4237864), (16, 2648665), (20, 2118932), (40, 1059466), (80, 529733), (197, 215120), (394, 107560), (788, 53780), (985, 43024), (1576, 26890), (1970, 21512), (2689, 15760), (3152, 13445), (3940, 10756), (5378, 7880)]