25117580

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 54250560

約数和(自身を除く): 29132980

約数列:

[1, 2, 4, 5, 10, 20, 89, 103, 137, 178, 206, 274, 356, 412, 445, 515, 548, 685, 890, 1030, 1370, 1780, 2060, 2740, 9167, 12193, 14111, 18334, 24386, 28222, 36668, 45835, 48772, 56444, 60965, 70555, 91670, 121930, 141110, 183340, 243860, 282220, 1255879, 2511758, 5023516, 6279395, 12558790, 25117580]

約数ペア:

[(1, 25117580), (2, 12558790), (4, 6279395), (5, 5023516), (10, 2511758), (20, 1255879), (89, 282220), (103, 243860), (137, 183340), (178, 141110), (206, 121930), (274, 91670), (356, 70555), (412, 60965), (445, 56444), (515, 48772), (548, 45835), (685, 36668), (890, 28222), (1030, 24386), (1370, 18334), (1780, 14111), (2060, 12193), (2740, 9167)]