21676816

素因数分解:

$2^4\times 7^2\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:708

約数の個数: 60

約数和(自身を含む): 50069712

約数和(自身を除く): 28392896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 49, 56, 86, 98, 112, 172, 196, 301, 344, 392, 602, 643, 688, 784, 1204, 1286, 2107, 2408, 2572, 4214, 4501, 4816, 5144, 8428, 9002, 10288, 16856, 18004, 27649, 31507, 33712, 36008, 55298, 63014, 72016, 110596, 126028, 193543, 221192, 252056, 387086, 442384, 504112, 774172, 1354801, 1548344, 2709602, 3096688, 5419204, 10838408, 21676816]

約数ペア:

[(1, 21676816), (2, 10838408), (4, 5419204), (7, 3096688), (8, 2709602), (14, 1548344), (16, 1354801), (28, 774172), (43, 504112), (49, 442384), (56, 387086), (86, 252056), (98, 221192), (112, 193543), (172, 126028), (196, 110596), (301, 72016), (344, 63014), (392, 55298), (602, 36008), (643, 33712), (688, 31507), (784, 27649), (1204, 18004), (1286, 16856), (2107, 10288), (2408, 9002), (2572, 8428), (4214, 5144), (4501, 4816)]