2789256981

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6990619}}^1$

素因数の和:6990648

約数の個数: 16

約数和(自身を含む): 4473996800

約数和(自身を除く): 1684739819

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 6990619, 20971857, 48934333, 132821761, 146802999, 398465283, 929752327, 2789256981]

約数ペア:

[(1, 2789256981), (3, 929752327), (7, 398465283), (19, 146802999), (21, 132821761), (57, 48934333), (133, 20971857), (399, 6990619)]