2218040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^2$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 5522040

約数和(自身を除く): 3304000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1420, 1562, 2840, 3124, 3905, 5041, 6248, 7810, 10082, 15620, 20164, 25205, 31240, 40328, 50410, 55451, 100820, 110902, 201640, 221804, 277255, 443608, 554510, 1109020, 2218040]

約数ペア:

[(1, 2218040), (2, 1109020), (4, 554510), (5, 443608), (8, 277255), (10, 221804), (11, 201640), (20, 110902), (22, 100820), (40, 55451), (44, 50410), (55, 40328), (71, 31240), (88, 25205), (110, 20164), (142, 15620), (220, 10082), (284, 7810), (355, 6248), (440, 5041), (568, 3905), (710, 3124), (781, 2840), (1420, 1562)]