20680809

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{643}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 28191744

約数和(自身を除く): 7510935

約数列:

[1, 3, 71, 151, 213, 453, 643, 1929, 10721, 32163, 45653, 97093, 136959, 291279, 6893603, 20680809]

約数ペア:

[(1, 20680809), (3, 6893603), (71, 291279), (151, 136959), (213, 97093), (453, 45653), (643, 32163), (1929, 10721)]