644540848

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{64661}}^1$

素因数の和:64765

約数の個数: 40

約数和(自身を含む): 1443255840

約数和(自身を除く): 798714992

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 2492, 4984, 9968, 64661, 129322, 258644, 452627, 517288, 905254, 1034576, 1810508, 3621016, 5754829, 7242032, 11509658, 23019316, 40283803, 46038632, 80567606, 92077264, 161135212, 322270424, 644540848]

約数ペア:

[(1, 644540848), (2, 322270424), (4, 161135212), (7, 92077264), (8, 80567606), (14, 46038632), (16, 40283803), (28, 23019316), (56, 11509658), (89, 7242032), (112, 5754829), (178, 3621016), (356, 1810508), (623, 1034576), (712, 905254), (1246, 517288), (1424, 452627), (2492, 258644), (4984, 129322), (9968, 64661)]