21187656

素因数分解:

$2^3\times 3^7\times 7^1\times {\mathrm{173}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 68486400

約数和(自身を除く): 47298744

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 81, 84, 108, 126, 162, 168, 173, 189, 216, 243, 252, 324, 346, 378, 486, 504, 519, 567, 648, 692, 729, 756, 972, 1038, 1134, 1211, 1384, 1458, 1512, 1557, 1701, 1944, 2076, 2187, 2268, 2422, 2916, 3114, 3402, 3633, 4152, 4374, 4536, 4671, 4844, 5103, 5832, 6228, 6804, 7266, 8748, 9342, 9688, 10206, 10899, 12456, 13608, 14013, 14532, 15309, 17496, 18684, 20412, 21798, 28026, 29064, 30618, 32697, 37368, 40824, 42039, 43596, 56052, 61236, 65394, 84078, 87192, 98091, 112104, 122472, 126117, 130788, 168156, 196182, 252234, 261576, 294273, 336312, 378351, 392364, 504468, 588546, 756702, 784728, 882819, 1008936, 1177092, 1513404, 1765638, 2354184, 2648457, 3026808, 3531276, 5296914, 7062552, 10593828, 21187656]

約数ペア:

[(1, 21187656), (2, 10593828), (3, 7062552), (4, 5296914), (6, 3531276), (7, 3026808), (8, 2648457), (9, 2354184), (12, 1765638), (14, 1513404), (18, 1177092), (21, 1008936), (24, 882819), (27, 784728), (28, 756702), (36, 588546), (42, 504468), (54, 392364), (56, 378351), (63, 336312), (72, 294273), (81, 261576), (84, 252234), (108, 196182), (126, 168156), (162, 130788), (168, 126117), (173, 122472), (189, 112104), (216, 98091), (243, 87192), (252, 84078), (324, 65394), (346, 61236), (378, 56052), (486, 43596), (504, 42039), (519, 40824), (567, 37368), (648, 32697), (692, 30618), (729, 29064), (756, 28026), (972, 21798), (1038, 20412), (1134, 18684), (1211, 17496), (1384, 15309), (1458, 14532), (1512, 14013), (1557, 13608), (1701, 12456), (1944, 10899), (2076, 10206), (2187, 9688), (2268, 9342), (2422, 8748), (2916, 7266), (3114, 6804), (3402, 6228), (3633, 5832), (4152, 5103), (4374, 4844), (4536, 4671)]