21508944

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:684

約数の個数: 80

約数和(自身を含む): 60299712

約数和(自身を除く): 38790768

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 43, 48, 51, 68, 86, 102, 129, 136, 172, 204, 258, 272, 344, 408, 516, 613, 688, 731, 816, 1032, 1226, 1462, 1839, 2064, 2193, 2452, 2924, 3678, 4386, 4904, 5848, 7356, 8772, 9808, 10421, 11696, 14712, 17544, 20842, 26359, 29424, 31263, 35088, 41684, 52718, 62526, 79077, 83368, 105436, 125052, 158154, 166736, 210872, 250104, 316308, 421744, 448103, 500208, 632616, 896206, 1265232, 1344309, 1792412, 2688618, 3584824, 5377236, 7169648, 10754472, 21508944]

約数ペア:

[(1, 21508944), (2, 10754472), (3, 7169648), (4, 5377236), (6, 3584824), (8, 2688618), (12, 1792412), (16, 1344309), (17, 1265232), (24, 896206), (34, 632616), (43, 500208), (48, 448103), (51, 421744), (68, 316308), (86, 250104), (102, 210872), (129, 166736), (136, 158154), (172, 125052), (204, 105436), (258, 83368), (272, 79077), (344, 62526), (408, 52718), (516, 41684), (613, 35088), (688, 31263), (731, 29424), (816, 26359), (1032, 20842), (1226, 17544), (1462, 14712), (1839, 11696), (2064, 10421), (2193, 9808), (2452, 8772), (2924, 7356), (3678, 5848), (4386, 4904)]