19541680

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1783}}^1$

素因数の和:1933

約数の個数: 40

約数和(自身を含む): 45791712

約数和(自身を除く): 26250032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1783, 2192, 2740, 3566, 5480, 7132, 8915, 10960, 14264, 17830, 28528, 35660, 71320, 142640, 244271, 488542, 977084, 1221355, 1954168, 2442710, 3908336, 4885420, 9770840, 19541680]

約数ペア:

[(1, 19541680), (2, 9770840), (4, 4885420), (5, 3908336), (8, 2442710), (10, 1954168), (16, 1221355), (20, 977084), (40, 488542), (80, 244271), (137, 142640), (274, 71320), (548, 35660), (685, 28528), (1096, 17830), (1370, 14264), (1783, 10960), (2192, 8915), (2740, 7132), (3566, 5480)]