21407928

素因数分解:

$2^3\times 3^1\times {\mathrm{891997}}^1$

素因数の和:892006

約数の個数: 16

約数和(自身を含む): 53519880

約数和(自身を除く): 32111952

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 891997, 1783994, 2675991, 3567988, 5351982, 7135976, 10703964, 21407928]

約数ペア:

[(1, 21407928), (2, 10703964), (3, 7135976), (4, 5351982), (6, 3567988), (8, 2675991), (12, 1783994), (24, 891997)]