28370748

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^2$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 77881216

約数和(自身を除く): 49510468

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 67, 71, 84, 134, 142, 201, 213, 268, 284, 402, 426, 469, 497, 804, 852, 938, 994, 1407, 1491, 1876, 1988, 2814, 2982, 4757, 5041, 5628, 5964, 9514, 10082, 14271, 15123, 19028, 20164, 28542, 30246, 33299, 35287, 57084, 60492, 66598, 70574, 99897, 105861, 133196, 141148, 199794, 211722, 337747, 399588, 423444, 675494, 1013241, 1350988, 2026482, 2364229, 4052964, 4728458, 7092687, 9456916, 14185374, 28370748]

約数ペア:

[(1, 28370748), (2, 14185374), (3, 9456916), (4, 7092687), (6, 4728458), (7, 4052964), (12, 2364229), (14, 2026482), (21, 1350988), (28, 1013241), (42, 675494), (67, 423444), (71, 399588), (84, 337747), (134, 211722), (142, 199794), (201, 141148), (213, 133196), (268, 105861), (284, 99897), (402, 70574), (426, 66598), (469, 60492), (497, 57084), (804, 35287), (852, 33299), (938, 30246), (994, 28542), (1407, 20164), (1491, 19028), (1876, 15123), (1988, 14271), (2814, 10082), (2982, 9514), (4757, 5964), (5041, 5628)]