20990968

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1597}}^1$

素因数の和:1687

約数の個数: 32

約数和(自身を含む): 41420160

約数和(自身を除く): 20429192

約数列:

[1, 2, 4, 8, 31, 53, 62, 106, 124, 212, 248, 424, 1597, 1643, 3194, 3286, 6388, 6572, 12776, 13144, 49507, 84641, 99014, 169282, 198028, 338564, 396056, 677128, 2623871, 5247742, 10495484, 20990968]

約数ペア:

[(1, 20990968), (2, 10495484), (4, 5247742), (8, 2623871), (31, 677128), (53, 396056), (62, 338564), (106, 198028), (124, 169282), (212, 99014), (248, 84641), (424, 49507), (1597, 13144), (1643, 12776), (3194, 6572), (3286, 6388)]