21369488

素因数分解:

$2^4\times 7^2\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:400

約数の個数: 60

約数和(自身を含む): 48832812

約数和(自身を除く): 27463324

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 97, 98, 112, 194, 196, 281, 388, 392, 562, 679, 776, 784, 1124, 1358, 1552, 1967, 2248, 2716, 3934, 4496, 4753, 5432, 7868, 9506, 10864, 13769, 15736, 19012, 27257, 27538, 31472, 38024, 54514, 55076, 76048, 109028, 110152, 190799, 218056, 220304, 381598, 436112, 763196, 1335593, 1526392, 2671186, 3052784, 5342372, 10684744, 21369488]

約数ペア:

[(1, 21369488), (2, 10684744), (4, 5342372), (7, 3052784), (8, 2671186), (14, 1526392), (16, 1335593), (28, 763196), (49, 436112), (56, 381598), (97, 220304), (98, 218056), (112, 190799), (194, 110152), (196, 109028), (281, 76048), (388, 55076), (392, 54514), (562, 38024), (679, 31472), (776, 27538), (784, 27257), (1124, 19012), (1358, 15736), (1552, 13769), (1967, 10864), (2248, 9506), (2716, 7868), (3934, 5432), (4496, 4753)]