21040971

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{32321}}^1$

素因数の和:32362

約数の個数: 16

約数和(自身を含む): 33097728

約数和(自身を除く): 12056757

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 32321, 96963, 226247, 678741, 1001951, 3005853, 7013657, 21040971]

約数ペア:

[(1, 21040971), (3, 7013657), (7, 3005853), (21, 1001951), (31, 678741), (93, 226247), (217, 96963), (651, 32321)]