71781680

素因数分解:

$2^4\times 5^1\times {\mathrm{897271}}^1$

素因数の和:897284

約数の個数: 20

約数和(自身を含む): 166892592

約数和(自身を除く): 95110912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 897271, 1794542, 3589084, 4486355, 7178168, 8972710, 14356336, 17945420, 35890840, 71781680]

約数ペア:

[(1, 71781680), (2, 35890840), (4, 17945420), (5, 14356336), (8, 8972710), (10, 7178168), (16, 4486355), (20, 3589084), (40, 1794542), (80, 897271)]