778860860

素因数分解:

$2^2\times 5^1\times {\mathrm{1487}}^1\times {\mathrm{26189}}^1$

素因数の和:27685

約数の個数: 24

約数和(自身を含む): 1636770240

約数和(自身を除く): 857909380

約数列:

[1, 2, 4, 5, 10, 20, 1487, 2974, 5948, 7435, 14870, 26189, 29740, 52378, 104756, 130945, 261890, 523780, 38943043, 77886086, 155772172, 194715215, 389430430, 778860860]

約数ペア:

[(1, 778860860), (2, 389430430), (4, 194715215), (5, 155772172), (10, 77886086), (20, 38943043), (1487, 523780), (2974, 261890), (5948, 130945), (7435, 104756), (14870, 52378), (26189, 29740)]