261455408

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{128669}}^1$

素因数の和:128804

約数の個数: 20

約数和(自身を含む): 510562560

約数和(自身を除く): 249107152

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 128669, 257338, 514676, 1029352, 2058704, 16340963, 32681926, 65363852, 130727704, 261455408]

約数ペア:

[(1, 261455408), (2, 130727704), (4, 65363852), (8, 32681926), (16, 16340963), (127, 2058704), (254, 1029352), (508, 514676), (1016, 257338), (2032, 128669)]