19988946

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:443

約数の個数: 48

約数和(自身を含む): 45279000

約数和(自身を除く): 25290054

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 87, 149, 174, 257, 261, 298, 447, 514, 522, 771, 894, 1341, 1542, 2313, 2682, 4321, 4626, 7453, 8642, 12963, 14906, 22359, 25926, 38293, 38889, 44718, 67077, 76586, 77778, 114879, 134154, 229758, 344637, 689274, 1110497, 2220994, 3331491, 6662982, 9994473, 19988946]

約数ペア:

[(1, 19988946), (2, 9994473), (3, 6662982), (6, 3331491), (9, 2220994), (18, 1110497), (29, 689274), (58, 344637), (87, 229758), (149, 134154), (174, 114879), (257, 77778), (261, 76586), (298, 67077), (447, 44718), (514, 38889), (522, 38293), (771, 25926), (894, 22359), (1341, 14906), (1542, 12963), (2313, 8642), (2682, 7453), (4321, 4626)]