78668140

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{28711}}^1$

素因数の和:28857

約数の個数: 24

約数和(自身を含む): 166414752

約数和(自身を除く): 87746612

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 28711, 57422, 114844, 143555, 287110, 574220, 3933407, 7866814, 15733628, 19667035, 39334070, 78668140]

約数ペア:

[(1, 78668140), (2, 39334070), (4, 19667035), (5, 15733628), (10, 7866814), (20, 3933407), (137, 574220), (274, 287110), (548, 143555), (685, 114844), (1370, 57422), (2740, 28711)]