21031803

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9461}}^1$

素因数の和:9499

約数の個数: 24

約数和(自身を含む): 34441680

約数和(自身を除く): 13409877

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9461, 28383, 85149, 122993, 179759, 368979, 539277, 1106937, 1617831, 2336867, 7010601, 21031803]

約数ペア:

[(1, 21031803), (3, 7010601), (9, 2336867), (13, 1617831), (19, 1106937), (39, 539277), (57, 368979), (117, 179759), (171, 122993), (247, 85149), (741, 28383), (2223, 9461)]