28778008

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:129

約数の個数: 128

約数和(自身を含む): 72230400

約数和(自身を除く): 43452392

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 34, 37, 38, 43, 56, 68, 74, 76, 86, 119, 133, 136, 148, 152, 172, 238, 259, 266, 296, 301, 323, 344, 476, 518, 532, 602, 629, 646, 703, 731, 817, 952, 1036, 1064, 1204, 1258, 1292, 1406, 1462, 1591, 1634, 2072, 2261, 2408, 2516, 2584, 2812, 2924, 3182, 3268, 4403, 4522, 4921, 5032, 5117, 5624, 5719, 5848, 6364, 6536, 8806, 9044, 9842, 10234, 11137, 11438, 11951, 12728, 13889, 17612, 18088, 19684, 20468, 22274, 22876, 23902, 27047, 27778, 30229, 35224, 39368, 40936, 44548, 45752, 47804, 54094, 55556, 60458, 83657, 89096, 95608, 97223, 108188, 111112, 120916, 167314, 189329, 194446, 211603, 216376, 241832, 334628, 378658, 388892, 423206, 513893, 669256, 757316, 777784, 846412, 1027786, 1514632, 1692824, 2055572, 3597251, 4111144, 7194502, 14389004, 28778008]

約数ペア:

[(1, 28778008), (2, 14389004), (4, 7194502), (7, 4111144), (8, 3597251), (14, 2055572), (17, 1692824), (19, 1514632), (28, 1027786), (34, 846412), (37, 777784), (38, 757316), (43, 669256), (56, 513893), (68, 423206), (74, 388892), (76, 378658), (86, 334628), (119, 241832), (133, 216376), (136, 211603), (148, 194446), (152, 189329), (172, 167314), (238, 120916), (259, 111112), (266, 108188), (296, 97223), (301, 95608), (323, 89096), (344, 83657), (476, 60458), (518, 55556), (532, 54094), (602, 47804), (629, 45752), (646, 44548), (703, 40936), (731, 39368), (817, 35224), (952, 30229), (1036, 27778), (1064, 27047), (1204, 23902), (1258, 22876), (1292, 22274), (1406, 20468), (1462, 19684), (1591, 18088), (1634, 17612), (2072, 13889), (2261, 12728), (2408, 11951), (2516, 11438), (2584, 11137), (2812, 10234), (2924, 9842), (3182, 9044), (3268, 8806), (4403, 6536), (4522, 6364), (4921, 5848), (5032, 5719), (5117, 5624)]