19800979

素因数分解:

${\mathrm{11}}^1\times {\mathrm{67}}^2\times {\mathrm{401}}^1$

素因数の和:546

約数の個数: 12

約数和(自身を含む): 21982968

約数和(自身を除く): 2181989

約数列:

[1, 11, 67, 401, 737, 4411, 4489, 26867, 49379, 295537, 1800089, 19800979]

約数ペア:

[(1, 19800979), (11, 1800089), (67, 295537), (401, 49379), (737, 26867), (4411, 4489)]