388908440

素因数分解:

$2^3\times 5^1\times {\mathrm{1097}}^1\times {\mathrm{8863}}^1$

素因数の和:9971

約数の個数: 32

約数和(自身を含む): 875940480

約数和(自身を除く): 487032040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1097, 2194, 4388, 5485, 8776, 8863, 10970, 17726, 21940, 35452, 43880, 44315, 70904, 88630, 177260, 354520, 9722711, 19445422, 38890844, 48613555, 77781688, 97227110, 194454220, 388908440]

約数ペア:

[(1, 388908440), (2, 194454220), (4, 97227110), (5, 77781688), (8, 48613555), (10, 38890844), (20, 19445422), (40, 9722711), (1097, 354520), (2194, 177260), (4388, 88630), (5485, 70904), (8776, 44315), (8863, 43880), (10970, 35452), (17726, 21940)]