209407760

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{20611}}^1$

素因数の和:20751

約数の個数: 40

約数和(自身を含む): 490730496

約数和(自身を除く): 281322736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 20611, 41222, 82444, 103055, 164888, 206110, 329776, 412220, 824440, 1648880, 2617597, 5235194, 10470388, 13087985, 20940776, 26175970, 41881552, 52351940, 104703880, 209407760]

約数ペア:

[(1, 209407760), (2, 104703880), (4, 52351940), (5, 41881552), (8, 26175970), (10, 20940776), (16, 13087985), (20, 10470388), (40, 5235194), (80, 2617597), (127, 1648880), (254, 824440), (508, 412220), (635, 329776), (1016, 206110), (1270, 164888), (2032, 103055), (2540, 82444), (5080, 41222), (10160, 20611)]