19877805

素因数分解:

$3^4\times 5^1\times {\mathrm{49081}}^1$

素因数の和:49098

約数の個数: 20

約数和(自身を含む): 35633532

約数和(自身を除く): 15755727

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49081, 147243, 245405, 441729, 736215, 1325187, 2208645, 3975561, 6625935, 19877805]

約数ペア:

[(1, 19877805), (3, 6625935), (5, 3975561), (9, 2208645), (15, 1325187), (27, 736215), (45, 441729), (81, 245405), (135, 147243), (405, 49081)]