640606288

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{1553}}^1$

素因数の和:1724

約数の個数: 80

約数和(自身を含む): 1479905280

約数和(自身を除く): 839298992

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 127, 203, 232, 254, 406, 464, 508, 812, 889, 1016, 1553, 1624, 1778, 2032, 3106, 3248, 3556, 3683, 6212, 7112, 7366, 10871, 12424, 14224, 14732, 21742, 24848, 25781, 29464, 43484, 45037, 51562, 58928, 86968, 90074, 103124, 173936, 180148, 197231, 206248, 315259, 360296, 394462, 412496, 630518, 720592, 788924, 1261036, 1380617, 1577848, 2522072, 2761234, 3155696, 5044144, 5522468, 5719699, 11044936, 11439398, 22089872, 22878796, 40037893, 45757592, 80075786, 91515184, 160151572, 320303144, 640606288]

約数ペア:

[(1, 640606288), (2, 320303144), (4, 160151572), (7, 91515184), (8, 80075786), (14, 45757592), (16, 40037893), (28, 22878796), (29, 22089872), (56, 11439398), (58, 11044936), (112, 5719699), (116, 5522468), (127, 5044144), (203, 3155696), (232, 2761234), (254, 2522072), (406, 1577848), (464, 1380617), (508, 1261036), (812, 788924), (889, 720592), (1016, 630518), (1553, 412496), (1624, 394462), (1778, 360296), (2032, 315259), (3106, 206248), (3248, 197231), (3556, 180148), (3683, 173936), (6212, 103124), (7112, 90074), (7366, 86968), (10871, 58928), (12424, 51562), (14224, 45037), (14732, 43484), (21742, 29464), (24848, 25781)]