20985765556

素因数分解:

$2^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{797}}^1\times {\mathrm{4217}}^1$

素因数の和:5248

約数の個数: 48

約数和(自身を含む): 42222652416

約数和(自身を除く): 21236886860

約数列:

[1, 2, 4, 7, 14, 28, 223, 446, 797, 892, 1561, 1594, 3122, 3188, 4217, 5579, 6244, 8434, 11158, 16868, 22316, 29519, 59038, 118076, 177731, 355462, 710924, 940391, 1244117, 1880782, 2488234, 3360949, 3761564, 4976468, 6582737, 6721898, 13165474, 13443796, 23526643, 26330948, 47053286, 94106572, 749491627, 1498983254, 2997966508, 5246441389, 10492882778, 20985765556]

約数ペア:

[(1, 20985765556), (2, 10492882778), (4, 5246441389), (7, 2997966508), (14, 1498983254), (28, 749491627), (223, 94106572), (446, 47053286), (797, 26330948), (892, 23526643), (1561, 13443796), (1594, 13165474), (3122, 6721898), (3188, 6582737), (4217, 4976468), (5579, 3761564), (6244, 3360949), (8434, 2488234), (11158, 1880782), (16868, 1244117), (22316, 940391), (29519, 710924), (59038, 355462), (118076, 177731)]