21098896

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:408

約数の個数: 80

約数和(自身を含む): 51635584

約数和(自身を除く): 30536688

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 43, 52, 56, 86, 91, 104, 112, 172, 182, 208, 301, 337, 344, 364, 559, 602, 674, 688, 728, 1118, 1204, 1348, 1456, 2236, 2359, 2408, 2696, 3913, 4381, 4472, 4718, 4816, 5392, 7826, 8762, 8944, 9436, 14491, 15652, 17524, 18872, 28982, 30667, 31304, 35048, 37744, 57964, 61334, 62608, 70096, 101437, 115928, 122668, 188383, 202874, 231856, 245336, 376766, 405748, 490672, 753532, 811496, 1318681, 1507064, 1622992, 2637362, 3014128, 5274724, 10549448, 21098896]

約数ペア:

[(1, 21098896), (2, 10549448), (4, 5274724), (7, 3014128), (8, 2637362), (13, 1622992), (14, 1507064), (16, 1318681), (26, 811496), (28, 753532), (43, 490672), (52, 405748), (56, 376766), (86, 245336), (91, 231856), (104, 202874), (112, 188383), (172, 122668), (182, 115928), (208, 101437), (301, 70096), (337, 62608), (344, 61334), (364, 57964), (559, 37744), (602, 35048), (674, 31304), (688, 30667), (728, 28982), (1118, 18872), (1204, 17524), (1348, 15652), (1456, 14491), (2236, 9436), (2359, 8944), (2408, 8762), (2696, 7826), (3913, 5392), (4381, 4816), (4472, 4718)]