21141344

素因数分解:

$2^5\times 7^2\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 72

約数和(自身を含む): 49268520

約数和(自身を除く): 28127176

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 97, 98, 112, 139, 194, 196, 224, 278, 388, 392, 556, 679, 776, 784, 973, 1112, 1358, 1552, 1568, 1946, 2224, 2716, 3104, 3892, 4448, 4753, 5432, 6811, 7784, 9506, 10864, 13483, 13622, 15568, 19012, 21728, 26966, 27244, 31136, 38024, 53932, 54488, 76048, 94381, 107864, 108976, 152096, 188762, 215728, 217952, 377524, 431456, 660667, 755048, 1321334, 1510096, 2642668, 3020192, 5285336, 10570672, 21141344]

約数ペア:

[(1, 21141344), (2, 10570672), (4, 5285336), (7, 3020192), (8, 2642668), (14, 1510096), (16, 1321334), (28, 755048), (32, 660667), (49, 431456), (56, 377524), (97, 217952), (98, 215728), (112, 188762), (139, 152096), (194, 108976), (196, 107864), (224, 94381), (278, 76048), (388, 54488), (392, 53932), (556, 38024), (679, 31136), (776, 27244), (784, 26966), (973, 21728), (1112, 19012), (1358, 15568), (1552, 13622), (1568, 13483), (1946, 10864), (2224, 9506), (2716, 7784), (3104, 6811), (3892, 5432), (4448, 4753)]