20546180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1069}}^1$

素因数の和:1140

約数の個数: 36

約数和(自身を含む): 44625420

約数和(自身を除く): 24079240

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1069, 1922, 2138, 3844, 4276, 4805, 5345, 9610, 10690, 19220, 21380, 33139, 66278, 132556, 165695, 331390, 662780, 1027309, 2054618, 4109236, 5136545, 10273090, 20546180]

約数ペア:

[(1, 20546180), (2, 10273090), (4, 5136545), (5, 4109236), (10, 2054618), (20, 1027309), (31, 662780), (62, 331390), (124, 165695), (155, 132556), (310, 66278), (620, 33139), (961, 21380), (1069, 19220), (1922, 10690), (2138, 9610), (3844, 5345), (4276, 4805)]