2181740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 5128704

約数和(自身を除く): 2946964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 211, 220, 235, 422, 470, 517, 844, 940, 1034, 1055, 2068, 2110, 2321, 2585, 4220, 4642, 5170, 9284, 9917, 10340, 11605, 19834, 23210, 39668, 46420, 49585, 99170, 109087, 198340, 218174, 436348, 545435, 1090870, 2181740]

約数ペア:

[(1, 2181740), (2, 1090870), (4, 545435), (5, 436348), (10, 218174), (11, 198340), (20, 109087), (22, 99170), (44, 49585), (47, 46420), (55, 39668), (94, 23210), (110, 19834), (188, 11605), (211, 10340), (220, 9917), (235, 9284), (422, 5170), (470, 4642), (517, 4220), (844, 2585), (940, 2321), (1034, 2110), (1055, 2068)]