20288940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 67721472

約数和(自身を除く): 47432532

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 67, 70, 84, 98, 103, 105, 134, 140, 147, 196, 201, 206, 210, 245, 268, 294, 309, 335, 402, 412, 420, 469, 490, 515, 588, 618, 670, 721, 735, 804, 938, 980, 1005, 1030, 1236, 1340, 1407, 1442, 1470, 1545, 1876, 2010, 2060, 2163, 2345, 2814, 2884, 2940, 3090, 3283, 3605, 4020, 4326, 4690, 5047, 5628, 6180, 6566, 6901, 7035, 7210, 8652, 9380, 9849, 10094, 10815, 13132, 13802, 14070, 14420, 15141, 16415, 19698, 20188, 20703, 21630, 25235, 27604, 28140, 30282, 32830, 34505, 39396, 41406, 43260, 48307, 49245, 50470, 60564, 65660, 69010, 75705, 82812, 96614, 98490, 100940, 103515, 138020, 144921, 151410, 193228, 196980, 207030, 241535, 289842, 302820, 338149, 414060, 483070, 579684, 676298, 724605, 966140, 1014447, 1352596, 1449210, 1690745, 2028894, 2898420, 3381490, 4057788, 5072235, 6762980, 10144470, 20288940]

約数ペア:

[(1, 20288940), (2, 10144470), (3, 6762980), (4, 5072235), (5, 4057788), (6, 3381490), (7, 2898420), (10, 2028894), (12, 1690745), (14, 1449210), (15, 1352596), (20, 1014447), (21, 966140), (28, 724605), (30, 676298), (35, 579684), (42, 483070), (49, 414060), (60, 338149), (67, 302820), (70, 289842), (84, 241535), (98, 207030), (103, 196980), (105, 193228), (134, 151410), (140, 144921), (147, 138020), (196, 103515), (201, 100940), (206, 98490), (210, 96614), (245, 82812), (268, 75705), (294, 69010), (309, 65660), (335, 60564), (402, 50470), (412, 49245), (420, 48307), (469, 43260), (490, 41406), (515, 39396), (588, 34505), (618, 32830), (670, 30282), (721, 28140), (735, 27604), (804, 25235), (938, 21630), (980, 20703), (1005, 20188), (1030, 19698), (1236, 16415), (1340, 15141), (1407, 14420), (1442, 14070), (1470, 13802), (1545, 13132), (1876, 10815), (2010, 10094), (2060, 9849), (2163, 9380), (2345, 8652), (2814, 7210), (2884, 7035), (2940, 6901), (3090, 6566), (3283, 6180), (3605, 5628), (4020, 5047), (4326, 4690)]