689801008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{26113}}^1$

素因数の和:26261

約数の個数: 40

約数和(自身を含む): 1450684928

約数和(自身を除く): 760883920

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 127, 208, 254, 508, 1016, 1651, 2032, 3302, 6604, 13208, 26113, 26416, 52226, 104452, 208904, 339469, 417808, 678938, 1357876, 2715752, 3316351, 5431504, 6632702, 13265404, 26530808, 43112563, 53061616, 86225126, 172450252, 344900504, 689801008]

約数ペア:

[(1, 689801008), (2, 344900504), (4, 172450252), (8, 86225126), (13, 53061616), (16, 43112563), (26, 26530808), (52, 13265404), (104, 6632702), (127, 5431504), (208, 3316351), (254, 2715752), (508, 1357876), (1016, 678938), (1651, 417808), (2032, 339469), (3302, 208904), (6604, 104452), (13208, 52226), (26113, 26416)]