2827220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 6604416

約数和(自身を除く): 3777196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 181, 220, 284, 355, 362, 710, 724, 781, 905, 1420, 1562, 1810, 1991, 3124, 3620, 3905, 3982, 7810, 7964, 9955, 12851, 15620, 19910, 25702, 39820, 51404, 64255, 128510, 141361, 257020, 282722, 565444, 706805, 1413610, 2827220]

約数ペア:

[(1, 2827220), (2, 1413610), (4, 706805), (5, 565444), (10, 282722), (11, 257020), (20, 141361), (22, 128510), (44, 64255), (55, 51404), (71, 39820), (110, 25702), (142, 19910), (181, 15620), (220, 12851), (284, 9955), (355, 7964), (362, 7810), (710, 3982), (724, 3905), (781, 3620), (905, 3124), (1420, 1991), (1562, 1810)]