20821071

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1553}}^1$

素因数の和:1706

約数の個数: 16

約数和(自身を含む): 28717920

約数和(自身を除く): 7896849

約数列:

[1, 3, 41, 109, 123, 327, 1553, 4469, 4659, 13407, 63673, 169277, 191019, 507831, 6940357, 20821071]

約数ペア:

[(1, 20821071), (3, 6940357), (41, 507831), (109, 191019), (123, 169277), (327, 63673), (1553, 13407), (4469, 4659)]