21509826

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{275767}}^1$

素因数の和:275785

約数の個数: 16

約数和(自身を含む): 46329024

約数和(自身を除く): 24819198

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 275767, 551534, 827301, 1654602, 3584971, 7169942, 10754913, 21509826]

約数ペア:

[(1, 21509826), (2, 10754913), (3, 7169942), (6, 3584971), (13, 1654602), (26, 827301), (39, 551534), (78, 275767)]