21457688

素因数分解:

$2^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:149

約数の個数: 96

約数和(自身を含む): 51163200

約数和(自身を除く): 29705512

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 43, 49, 56, 67, 76, 86, 98, 133, 134, 152, 172, 196, 266, 268, 301, 344, 392, 469, 532, 536, 602, 817, 931, 938, 1064, 1204, 1273, 1634, 1862, 1876, 2107, 2408, 2546, 2881, 3268, 3283, 3724, 3752, 4214, 5092, 5719, 5762, 6536, 6566, 7448, 8428, 8911, 10184, 11438, 11524, 13132, 16856, 17822, 20167, 22876, 23048, 26264, 35644, 40033, 40334, 45752, 54739, 62377, 71288, 80066, 80668, 109478, 124754, 141169, 160132, 161336, 218956, 249508, 282338, 320264, 383173, 437912, 499016, 564676, 766346, 1129352, 1532692, 2682211, 3065384, 5364422, 10728844, 21457688]

約数ペア:

[(1, 21457688), (2, 10728844), (4, 5364422), (7, 3065384), (8, 2682211), (14, 1532692), (19, 1129352), (28, 766346), (38, 564676), (43, 499016), (49, 437912), (56, 383173), (67, 320264), (76, 282338), (86, 249508), (98, 218956), (133, 161336), (134, 160132), (152, 141169), (172, 124754), (196, 109478), (266, 80668), (268, 80066), (301, 71288), (344, 62377), (392, 54739), (469, 45752), (532, 40334), (536, 40033), (602, 35644), (817, 26264), (931, 23048), (938, 22876), (1064, 20167), (1204, 17822), (1273, 16856), (1634, 13132), (1862, 11524), (1876, 11438), (2107, 10184), (2408, 8911), (2546, 8428), (2881, 7448), (3268, 6566), (3283, 6536), (3724, 5762), (3752, 5719), (4214, 5092)]