20448915

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{1621}}^1$

素因数の和:1687

約数の個数: 24

約数和(自身を含む): 33906288

約数和(自身を除く): 13457373

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 841, 1621, 2523, 4205, 4863, 8105, 12615, 24315, 47009, 141027, 235045, 705135, 1363261, 4089783, 6816305, 20448915]

約数ペア:

[(1, 20448915), (3, 6816305), (5, 4089783), (15, 1363261), (29, 705135), (87, 235045), (145, 141027), (435, 47009), (841, 24315), (1621, 12615), (2523, 8105), (4205, 4863)]