19887345

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9403}}^1$

素因数の和:9461

約数の個数: 24

約数和(自身を含む): 35208576

約数和(自身を除く): 15321231

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9403, 28209, 47015, 84627, 141045, 423135, 441941, 1325823, 2209705, 3977469, 6629115, 19887345]

約数ペア:

[(1, 19887345), (3, 6629115), (5, 3977469), (9, 2209705), (15, 1325823), (45, 441941), (47, 423135), (141, 141045), (235, 84627), (423, 47015), (705, 28209), (2115, 9403)]