21055984

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13567}}^1$

素因数の和:13672

約数の個数: 20

約数和(自身を含む): 41219584

約数和(自身を除く): 20163600

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13567, 27134, 54268, 108536, 217072, 1315999, 2631998, 5263996, 10527992, 21055984]

約数ペア:

[(1, 21055984), (2, 10527992), (4, 5263996), (8, 2631998), (16, 1315999), (97, 217072), (194, 108536), (388, 54268), (776, 27134), (1552, 13567)]