20531898

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:739

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 26170758

約数列:

[1, 2, 3, 6, 9, 18, 41, 43, 82, 86, 123, 129, 246, 258, 369, 387, 647, 738, 774, 1294, 1763, 1941, 3526, 3882, 5289, 5823, 10578, 11646, 15867, 26527, 27821, 31734, 53054, 55642, 79581, 83463, 159162, 166926, 238743, 250389, 477486, 500778, 1140661, 2281322, 3421983, 6843966, 10265949, 20531898]

約数ペア:

[(1, 20531898), (2, 10265949), (3, 6843966), (6, 3421983), (9, 2281322), (18, 1140661), (41, 500778), (43, 477486), (82, 250389), (86, 238743), (123, 166926), (129, 159162), (246, 83463), (258, 79581), (369, 55642), (387, 53054), (647, 31734), (738, 27821), (774, 26527), (1294, 15867), (1763, 11646), (1941, 10578), (3526, 5823), (3882, 5289)]