18742864

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2357}}^1$

素因数の和:2443

約数の個数: 40

約数和(自身を含む): 42104448

約数和(自身を除く): 23361584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2357, 3976, 4714, 7952, 9428, 16499, 18856, 32998, 37712, 65996, 131992, 167347, 263984, 334694, 669388, 1171429, 1338776, 2342858, 2677552, 4685716, 9371432, 18742864]

約数ペア:

[(1, 18742864), (2, 9371432), (4, 4685716), (7, 2677552), (8, 2342858), (14, 1338776), (16, 1171429), (28, 669388), (56, 334694), (71, 263984), (112, 167347), (142, 131992), (284, 65996), (497, 37712), (568, 32998), (994, 18856), (1136, 16499), (1988, 9428), (2357, 7952), (3976, 4714)]