21255416

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 96

約数和(自身を含む): 51614640

約数和(自身を除く): 30359224

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 43, 49, 52, 56, 86, 91, 97, 98, 104, 172, 182, 194, 196, 301, 344, 364, 388, 392, 559, 602, 637, 679, 728, 776, 1118, 1204, 1261, 1274, 1358, 2107, 2236, 2408, 2522, 2548, 2716, 3913, 4171, 4214, 4472, 4753, 5044, 5096, 5432, 7826, 8342, 8428, 8827, 9506, 10088, 15652, 16684, 16856, 17654, 19012, 27391, 29197, 31304, 33368, 35308, 38024, 54223, 54782, 58394, 61789, 70616, 108446, 109564, 116788, 123578, 204379, 216892, 219128, 233576, 247156, 379561, 408758, 433784, 494312, 759122, 817516, 1518244, 1635032, 2656927, 3036488, 5313854, 10627708, 21255416]

約数ペア:

[(1, 21255416), (2, 10627708), (4, 5313854), (7, 3036488), (8, 2656927), (13, 1635032), (14, 1518244), (26, 817516), (28, 759122), (43, 494312), (49, 433784), (52, 408758), (56, 379561), (86, 247156), (91, 233576), (97, 219128), (98, 216892), (104, 204379), (172, 123578), (182, 116788), (194, 109564), (196, 108446), (301, 70616), (344, 61789), (364, 58394), (388, 54782), (392, 54223), (559, 38024), (602, 35308), (637, 33368), (679, 31304), (728, 29197), (776, 27391), (1118, 19012), (1204, 17654), (1261, 16856), (1274, 16684), (1358, 15652), (2107, 10088), (2236, 9506), (2408, 8827), (2522, 8428), (2548, 8342), (2716, 7826), (3913, 5432), (4171, 5096), (4214, 5044), (4472, 4753)]