20746936

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:117

約数の個数: 128

約数和(自身を含む): 52531200

約数和(自身を除く): 31784264

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 31, 34, 37, 38, 56, 62, 68, 74, 76, 119, 124, 133, 136, 148, 152, 217, 238, 248, 259, 266, 296, 323, 434, 476, 518, 527, 532, 589, 629, 646, 703, 868, 952, 1036, 1054, 1064, 1147, 1178, 1258, 1292, 1406, 1736, 2072, 2108, 2261, 2294, 2356, 2516, 2584, 2812, 3689, 4123, 4216, 4403, 4522, 4588, 4712, 4921, 5032, 5624, 7378, 8029, 8246, 8806, 9044, 9176, 9842, 10013, 11951, 14756, 16058, 16492, 17612, 18088, 19499, 19684, 20026, 21793, 23902, 29512, 32116, 32984, 35224, 38998, 39368, 40052, 43586, 47804, 64232, 70091, 77996, 80104, 83657, 87172, 95608, 136493, 140182, 152551, 155992, 167314, 174344, 272986, 280364, 305102, 334628, 370481, 545972, 560728, 610204, 669256, 740962, 1091944, 1220408, 1481924, 2593367, 2963848, 5186734, 10373468, 20746936]

約数ペア:

[(1, 20746936), (2, 10373468), (4, 5186734), (7, 2963848), (8, 2593367), (14, 1481924), (17, 1220408), (19, 1091944), (28, 740962), (31, 669256), (34, 610204), (37, 560728), (38, 545972), (56, 370481), (62, 334628), (68, 305102), (74, 280364), (76, 272986), (119, 174344), (124, 167314), (133, 155992), (136, 152551), (148, 140182), (152, 136493), (217, 95608), (238, 87172), (248, 83657), (259, 80104), (266, 77996), (296, 70091), (323, 64232), (434, 47804), (476, 43586), (518, 40052), (527, 39368), (532, 38998), (589, 35224), (629, 32984), (646, 32116), (703, 29512), (868, 23902), (952, 21793), (1036, 20026), (1054, 19684), (1064, 19499), (1147, 18088), (1178, 17612), (1258, 16492), (1292, 16058), (1406, 14756), (1736, 11951), (2072, 10013), (2108, 9842), (2261, 9176), (2294, 9044), (2356, 8806), (2516, 8246), (2584, 8029), (2812, 7378), (3689, 5624), (4123, 5032), (4216, 4921), (4403, 4712), (4522, 4588)]