28442920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:658

約数の個数: 64

約数和(自身を含む): 70502400

約数和(自身を除く): 42059480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 127, 220, 254, 440, 508, 509, 635, 1016, 1018, 1270, 1397, 2036, 2540, 2545, 2794, 4072, 5080, 5090, 5588, 5599, 6985, 10180, 11176, 11198, 13970, 20360, 22396, 27940, 27995, 44792, 55880, 55990, 64643, 111980, 129286, 223960, 258572, 323215, 517144, 646430, 711073, 1292860, 1422146, 2585720, 2844292, 3555365, 5688584, 7110730, 14221460, 28442920]

約数ペア:

[(1, 28442920), (2, 14221460), (4, 7110730), (5, 5688584), (8, 3555365), (10, 2844292), (11, 2585720), (20, 1422146), (22, 1292860), (40, 711073), (44, 646430), (55, 517144), (88, 323215), (110, 258572), (127, 223960), (220, 129286), (254, 111980), (440, 64643), (508, 55990), (509, 55880), (635, 44792), (1016, 27995), (1018, 27940), (1270, 22396), (1397, 20360), (2036, 13970), (2540, 11198), (2545, 11176), (2794, 10180), (4072, 6985), (5080, 5599), (5090, 5588)]