21504791

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1543}}^1$

素因数の和:1742

約数の個数: 16

約数和(自身を含む): 26976768

約数和(自身を除く): 5471977

約数列:

[1, 7, 11, 77, 181, 1267, 1543, 1991, 10801, 13937, 16973, 118811, 279283, 1954981, 3072113, 21504791]

約数ペア:

[(1, 21504791), (7, 3072113), (11, 1954981), (77, 279283), (181, 118811), (1267, 16973), (1543, 13937), (1991, 10801)]