2821940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 6580224

約数和(自身を除く): 3758284

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 127, 202, 220, 254, 404, 505, 508, 635, 1010, 1111, 1270, 1397, 2020, 2222, 2540, 2794, 4444, 5555, 5588, 6985, 11110, 12827, 13970, 22220, 25654, 27940, 51308, 64135, 128270, 141097, 256540, 282194, 564388, 705485, 1410970, 2821940]

約数ペア:

[(1, 2821940), (2, 1410970), (4, 705485), (5, 564388), (10, 282194), (11, 256540), (20, 141097), (22, 128270), (44, 64135), (55, 51308), (101, 27940), (110, 25654), (127, 22220), (202, 13970), (220, 12827), (254, 11110), (404, 6985), (505, 5588), (508, 5555), (635, 4444), (1010, 2794), (1111, 2540), (1270, 2222), (1397, 2020)]