209920449

素因数分解:

$3^1\times {\mathrm{173}}^1\times {\mathrm{631}}^1\times {\mathrm{641}}^1$

素因数の和:1448

約数の個数: 16

約数和(自身を含む): 282397824

約数和(自身を除く): 72477375

約数列:

[1, 3, 173, 519, 631, 641, 1893, 1923, 109163, 110893, 327489, 332679, 404471, 1213413, 69973483, 209920449]

約数ペア:

[(1, 209920449), (3, 69973483), (173, 1213413), (519, 404471), (631, 332679), (641, 327489), (1893, 110893), (1923, 109163)]