20780504

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{439}}^1$

素因数の和:603

約数の個数: 32

約数和(自身を含む): 40101600

約数和(自身を除く): 19321096

約数列:

[1, 2, 4, 8, 61, 97, 122, 194, 244, 388, 439, 488, 776, 878, 1756, 3512, 5917, 11834, 23668, 26779, 42583, 47336, 53558, 85166, 107116, 170332, 214232, 340664, 2597563, 5195126, 10390252, 20780504]

約数ペア:

[(1, 20780504), (2, 10390252), (4, 5195126), (8, 2597563), (61, 340664), (97, 214232), (122, 170332), (194, 107116), (244, 85166), (388, 53558), (439, 47336), (488, 42583), (776, 26779), (878, 23668), (1756, 11834), (3512, 5917)]