21240728

素因数分解:

$2^3\times {\mathrm{191}}^1\times {\mathrm{13901}}^1$

素因数の和:14098

約数の個数: 16

約数和(自身を含む): 40037760

約数和(自身を除く): 18797032

約数列:

[1, 2, 4, 8, 191, 382, 764, 1528, 13901, 27802, 55604, 111208, 2655091, 5310182, 10620364, 21240728]

約数ペア:

[(1, 21240728), (2, 10620364), (4, 5310182), (8, 2655091), (191, 111208), (382, 55604), (764, 27802), (1528, 13901)]