640497676

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2503}}^1$

素因数の和:2583

約数の個数: 96

約数和(自身を含む): 1491983360

約数和(自身を除く): 851485684

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 37, 38, 52, 74, 76, 91, 133, 148, 182, 247, 259, 266, 364, 481, 494, 518, 532, 703, 962, 988, 1036, 1406, 1729, 1924, 2503, 2812, 3367, 3458, 4921, 5006, 6734, 6916, 9139, 9842, 10012, 13468, 17521, 18278, 19684, 32539, 35042, 36556, 47557, 63973, 65078, 70084, 92611, 95114, 127946, 130156, 185222, 190228, 227773, 255892, 332899, 370444, 455546, 618241, 648277, 665798, 911092, 1203943, 1236482, 1296554, 1331596, 1759609, 2407886, 2472964, 2593108, 3519218, 4327687, 4815772, 7038436, 8427601, 8655374, 12317263, 16855202, 17310748, 22874917, 24634526, 33710404, 45749834, 49269052, 91499668, 160124419, 320248838, 640497676]

約数ペア:

[(1, 640497676), (2, 320248838), (4, 160124419), (7, 91499668), (13, 49269052), (14, 45749834), (19, 33710404), (26, 24634526), (28, 22874917), (37, 17310748), (38, 16855202), (52, 12317263), (74, 8655374), (76, 8427601), (91, 7038436), (133, 4815772), (148, 4327687), (182, 3519218), (247, 2593108), (259, 2472964), (266, 2407886), (364, 1759609), (481, 1331596), (494, 1296554), (518, 1236482), (532, 1203943), (703, 911092), (962, 665798), (988, 648277), (1036, 618241), (1406, 455546), (1729, 370444), (1924, 332899), (2503, 255892), (2812, 227773), (3367, 190228), (3458, 185222), (4921, 130156), (5006, 127946), (6734, 95114), (6916, 92611), (9139, 70084), (9842, 65078), (10012, 63973), (13468, 47557), (17521, 36556), (18278, 35042), (19684, 32539)]