20871645

素因数分解:

$3^1\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1433}}^1$

素因数の和:2412

約数の個数: 16

約数和(自身を含む): 33452352

約数和(自身を除く): 12580707

約数列:

[1, 3, 5, 15, 971, 1433, 2913, 4299, 4855, 7165, 14565, 21495, 1391443, 4174329, 6957215, 20871645]

約数ペア:

[(1, 20871645), (3, 6957215), (5, 4174329), (15, 1391443), (971, 21495), (1433, 14565), (2913, 7165), (4299, 4855)]