21085728

素因数分解:

$2^5\times 3^1\times {\mathrm{157}}^1\times {\mathrm{1399}}^1$

素因数の和:1569

約数の個数: 48

約数和(自身を含む): 55742400

約数和(自身を除く): 34656672

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 157, 314, 471, 628, 942, 1256, 1399, 1884, 2512, 2798, 3768, 4197, 5024, 5596, 7536, 8394, 11192, 15072, 16788, 22384, 33576, 44768, 67152, 134304, 219643, 439286, 658929, 878572, 1317858, 1757144, 2635716, 3514288, 5271432, 7028576, 10542864, 21085728]

約数ペア:

[(1, 21085728), (2, 10542864), (3, 7028576), (4, 5271432), (6, 3514288), (8, 2635716), (12, 1757144), (16, 1317858), (24, 878572), (32, 658929), (48, 439286), (96, 219643), (157, 134304), (314, 67152), (471, 44768), (628, 33576), (942, 22384), (1256, 16788), (1399, 15072), (1884, 11192), (2512, 8394), (2798, 7536), (3768, 5596), (4197, 5024)]