28198940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18311}}^1$

素因数の和:18338

約数の個数: 48

約数和(自身を含む): 73833984

約数和(自身を除く): 45635044

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18311, 36622, 73244, 91555, 128177, 183110, 201421, 256354, 366220, 402842, 512708, 640885, 805684, 1007105, 1281770, 1409947, 2014210, 2563540, 2819894, 4028420, 5639788, 7049735, 14099470, 28198940]

約数ペア:

[(1, 28198940), (2, 14099470), (4, 7049735), (5, 5639788), (7, 4028420), (10, 2819894), (11, 2563540), (14, 2014210), (20, 1409947), (22, 1281770), (28, 1007105), (35, 805684), (44, 640885), (55, 512708), (70, 402842), (77, 366220), (110, 256354), (140, 201421), (154, 183110), (220, 128177), (308, 91555), (385, 73244), (770, 36622), (1540, 18311)]