21696680

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4271}}^1$

素因数の和:4409

約数の個数: 32

約数和(自身を含む): 49213440

約数和(自身を除く): 27516760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 4271, 5080, 8542, 17084, 21355, 34168, 42710, 85420, 170840, 542417, 1084834, 2169668, 2712085, 4339336, 5424170, 10848340, 21696680]

約数ペア:

[(1, 21696680), (2, 10848340), (4, 5424170), (5, 4339336), (8, 2712085), (10, 2169668), (20, 1084834), (40, 542417), (127, 170840), (254, 85420), (508, 42710), (635, 34168), (1016, 21355), (1270, 17084), (2540, 8542), (4271, 5080)]