21000464

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{12743}}^1$

素因数の和:12854

約数の個数: 20

約数和(自身を含む): 41086656

約数和(自身を除く): 20086192

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 12743, 25486, 50972, 101944, 203888, 1312529, 2625058, 5250116, 10500232, 21000464]

約数ペア:

[(1, 21000464), (2, 10500232), (4, 5250116), (8, 2625058), (16, 1312529), (103, 203888), (206, 101944), (412, 50972), (824, 25486), (1648, 12743)]