19981584

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:525

約数の個数: 120

約数和(自身を含む): 65537472

約数和(自身を除く): 45555888

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 43, 48, 56, 63, 72, 84, 86, 112, 126, 129, 144, 168, 172, 252, 258, 301, 336, 344, 387, 461, 504, 516, 602, 688, 774, 903, 922, 1008, 1032, 1204, 1383, 1548, 1806, 1844, 2064, 2408, 2709, 2766, 3096, 3227, 3612, 3688, 4149, 4816, 5418, 5532, 6192, 6454, 7224, 7376, 8298, 9681, 10836, 11064, 12908, 14448, 16596, 19362, 19823, 21672, 22128, 25816, 29043, 33192, 38724, 39646, 43344, 51632, 58086, 59469, 66384, 77448, 79292, 116172, 118938, 138761, 154896, 158584, 178407, 232344, 237876, 277522, 317168, 356814, 416283, 464688, 475752, 555044, 713628, 832566, 951504, 1110088, 1248849, 1427256, 1665132, 2220176, 2497698, 2854512, 3330264, 4995396, 6660528, 9990792, 19981584]

約数ペア:

[(1, 19981584), (2, 9990792), (3, 6660528), (4, 4995396), (6, 3330264), (7, 2854512), (8, 2497698), (9, 2220176), (12, 1665132), (14, 1427256), (16, 1248849), (18, 1110088), (21, 951504), (24, 832566), (28, 713628), (36, 555044), (42, 475752), (43, 464688), (48, 416283), (56, 356814), (63, 317168), (72, 277522), (84, 237876), (86, 232344), (112, 178407), (126, 158584), (129, 154896), (144, 138761), (168, 118938), (172, 116172), (252, 79292), (258, 77448), (301, 66384), (336, 59469), (344, 58086), (387, 51632), (461, 43344), (504, 39646), (516, 38724), (602, 33192), (688, 29043), (774, 25816), (903, 22128), (922, 21672), (1008, 19823), (1032, 19362), (1204, 16596), (1383, 14448), (1548, 12908), (1806, 11064), (1844, 10836), (2064, 9681), (2408, 8298), (2709, 7376), (2766, 7224), (3096, 6454), (3227, 6192), (3612, 5532), (3688, 5418), (4149, 4816)]