19690216

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:123

約数の個数: 128

約数和(自身を含む): 50561280

約数和(自身を除く): 30871064

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 26, 28, 34, 37, 43, 52, 56, 68, 74, 86, 91, 104, 119, 136, 148, 172, 182, 221, 238, 259, 296, 301, 344, 364, 442, 476, 481, 518, 559, 602, 629, 728, 731, 884, 952, 962, 1036, 1118, 1204, 1258, 1462, 1547, 1591, 1768, 1924, 2072, 2236, 2408, 2516, 2924, 3094, 3182, 3367, 3848, 3913, 4403, 4472, 5032, 5117, 5848, 6188, 6364, 6734, 7826, 8177, 8806, 9503, 10234, 11137, 12376, 12728, 13468, 15652, 16354, 17612, 19006, 20468, 20683, 22274, 26936, 27047, 31304, 32708, 35224, 38012, 40936, 41366, 44548, 54094, 57239, 65416, 66521, 76024, 82732, 89096, 108188, 114478, 133042, 144781, 165464, 189329, 216376, 228956, 266084, 289562, 351611, 378658, 457912, 532168, 579124, 703222, 757316, 1158248, 1406444, 1514632, 2461277, 2812888, 4922554, 9845108, 19690216]

約数ペア:

[(1, 19690216), (2, 9845108), (4, 4922554), (7, 2812888), (8, 2461277), (13, 1514632), (14, 1406444), (17, 1158248), (26, 757316), (28, 703222), (34, 579124), (37, 532168), (43, 457912), (52, 378658), (56, 351611), (68, 289562), (74, 266084), (86, 228956), (91, 216376), (104, 189329), (119, 165464), (136, 144781), (148, 133042), (172, 114478), (182, 108188), (221, 89096), (238, 82732), (259, 76024), (296, 66521), (301, 65416), (344, 57239), (364, 54094), (442, 44548), (476, 41366), (481, 40936), (518, 38012), (559, 35224), (602, 32708), (629, 31304), (728, 27047), (731, 26936), (884, 22274), (952, 20683), (962, 20468), (1036, 19006), (1118, 17612), (1204, 16354), (1258, 15652), (1462, 13468), (1547, 12728), (1591, 12376), (1768, 11137), (1924, 10234), (2072, 9503), (2236, 8806), (2408, 8177), (2516, 7826), (2924, 6734), (3094, 6364), (3182, 6188), (3367, 5848), (3848, 5117), (3913, 5032), (4403, 4472)]