689936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:159

約数の個数: 40

約数和(自身を含む): 1499904

約数和(自身を除く): 809968

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 107, 124, 208, 214, 248, 403, 428, 496, 806, 856, 1391, 1612, 1712, 2782, 3224, 3317, 5564, 6448, 6634, 11128, 13268, 22256, 26536, 43121, 53072, 86242, 172484, 344968, 689936]

約数ペア:

[(1, 689936), (2, 344968), (4, 172484), (8, 86242), (13, 53072), (16, 43121), (26, 26536), (31, 22256), (52, 13268), (62, 11128), (104, 6634), (107, 6448), (124, 5564), (208, 3317), (214, 3224), (248, 2782), (403, 1712), (428, 1612), (496, 1391), (806, 856)]