20618968

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1171}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 40504320

約数和(自身を除く): 19885352

約数列:

[1, 2, 4, 8, 31, 62, 71, 124, 142, 248, 284, 568, 1171, 2201, 2342, 4402, 4684, 8804, 9368, 17608, 36301, 72602, 83141, 145204, 166282, 290408, 332564, 665128, 2577371, 5154742, 10309484, 20618968]

約数ペア:

[(1, 20618968), (2, 10309484), (4, 5154742), (8, 2577371), (31, 665128), (62, 332564), (71, 290408), (124, 166282), (142, 145204), (248, 83141), (284, 72602), (568, 36301), (1171, 17608), (2201, 9368), (2342, 8804), (4402, 4684)]