20788430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{159911}}^1$

素因数の和:159931

約数の個数: 16

約数和(自身を含む): 40297824

約数和(自身を除く): 19509394

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 159911, 319822, 799555, 1599110, 2078843, 4157686, 10394215, 20788430]

約数ペア:

[(1, 20788430), (2, 10394215), (5, 4157686), (10, 2078843), (13, 1599110), (26, 799555), (65, 319822), (130, 159911)]