20575640

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5303}}^1$

素因数の和:5411

約数の個数: 32

約数和(自身を含む): 46781280

約数和(自身を除く): 26205640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5303, 10606, 21212, 26515, 42424, 53030, 106060, 212120, 514391, 1028782, 2057564, 2571955, 4115128, 5143910, 10287820, 20575640]

約数ペア:

[(1, 20575640), (2, 10287820), (4, 5143910), (5, 4115128), (8, 2571955), (10, 2057564), (20, 1028782), (40, 514391), (97, 212120), (194, 106060), (388, 53030), (485, 42424), (776, 26515), (970, 21212), (1940, 10606), (3880, 5303)]