20818856

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 40673280

約数和(自身を除く): 19854424

約数列:

[1, 2, 4, 8, 31, 62, 124, 127, 248, 254, 508, 661, 1016, 1322, 2644, 3937, 5288, 7874, 15748, 20491, 31496, 40982, 81964, 83947, 163928, 167894, 335788, 671576, 2602357, 5204714, 10409428, 20818856]

約数ペア:

[(1, 20818856), (2, 10409428), (4, 5204714), (8, 2602357), (31, 671576), (62, 335788), (124, 167894), (127, 163928), (248, 83947), (254, 81964), (508, 40982), (661, 31496), (1016, 20491), (1322, 15748), (2644, 7874), (3937, 5288)]