55781680

素因数分解:

$2^4\times 5^1\times {\mathrm{697271}}^1$

素因数の和:697284

約数の個数: 20

約数和(自身を含む): 129692592

約数和(自身を除く): 73910912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 697271, 1394542, 2789084, 3486355, 5578168, 6972710, 11156336, 13945420, 27890840, 55781680]

約数ペア:

[(1, 55781680), (2, 27890840), (4, 13945420), (5, 11156336), (8, 6972710), (10, 5578168), (16, 3486355), (20, 2789084), (40, 1394542), (80, 697271)]