20931201981

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5498083}}^1$

素因数の和:5498142

約数の個数: 20

約数和(自身を含む): 31932871872

約数和(自身を除く): 11001669891

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5498083, 16494249, 49482747, 148448241, 258409901, 445344723, 775229703, 2325689109, 6977067327, 20931201981]

約数ペア:

[(1, 20931201981), (3, 6977067327), (9, 2325689109), (27, 775229703), (47, 445344723), (81, 258409901), (141, 148448241), (423, 49482747), (1269, 16494249), (3807, 5498083)]