20788215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6827}}^1$

素因数の和:6871

約数の個数: 32

約数和(自身を含む): 39329280

約数和(自身を除く): 18541065

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 6827, 20481, 34135, 47789, 102405, 143367, 197983, 238945, 593949, 716835, 989915, 1385881, 2969745, 4157643, 6929405, 20788215]

約数ペア:

[(1, 20788215), (3, 6929405), (5, 4157643), (7, 2969745), (15, 1385881), (21, 989915), (29, 716835), (35, 593949), (87, 238945), (105, 197983), (145, 143367), (203, 102405), (435, 47789), (609, 34135), (1015, 20481), (3045, 6827)]