20974877

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1291}}^1$

素因数の和:1520

約数の個数: 16

約数和(自身を含む): 26294784

約数和(自身を除く): 5319907

約数列:

[1, 7, 11, 77, 211, 1291, 1477, 2321, 9037, 14201, 16247, 99407, 272401, 1906807, 2996411, 20974877]

約数ペア:

[(1, 20974877), (7, 2996411), (11, 1906807), (77, 272401), (211, 99407), (1291, 16247), (1477, 14201), (2321, 9037)]