389888961

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1687831}}^1$

素因数の和:1687852

約数の個数: 16

約数和(自身を含む): 648127488

約数和(自身を除く): 258238527

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 1687831, 5063493, 11814817, 18566141, 35444451, 55698423, 129962987, 389888961]

約数ペア:

[(1, 389888961), (3, 129962987), (7, 55698423), (11, 35444451), (21, 18566141), (33, 11814817), (77, 5063493), (231, 1687831)]