1880340021

素因数分解:

$3^3\times 7^1\times {\mathrm{9948889}}^1$

素因数の和:9948905

約数の個数: 16

約数和(自身を含む): 3183644800

約数和(自身を除く): 1303304779

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 9948889, 29846667, 69642223, 89540001, 208926669, 268620003, 626780007, 1880340021]

約数ペア:

[(1, 1880340021), (3, 626780007), (7, 268620003), (9, 208926669), (21, 89540001), (27, 69642223), (63, 29846667), (189, 9948889)]