1999788147

素因数分解:

$3^2\times 7^2\times {\mathrm{4534667}}^1$

素因数の和:4534687

約数の個数: 18

約数和(自身を含む): 3360188988

約数和(自身を除く): 1360400841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4534667, 13604001, 31742669, 40812003, 95228007, 222198683, 285684021, 666596049, 1999788147]

約数ペア:

[(1, 1999788147), (3, 666596049), (7, 285684021), (9, 222198683), (21, 95228007), (49, 40812003), (63, 31742669), (147, 13604001), (441, 4534667)]