19979943

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1\times {\mathrm{281}}^1$

素因数の和:594

約数の個数: 16

約数和(自身を含む): 27085536

約数和(自身を除く): 7105593

約数列:

[1, 3, 137, 173, 281, 411, 519, 843, 23701, 38497, 48613, 71103, 115491, 145839, 6659981, 19979943]

約数ペア:

[(1, 19979943), (3, 6659981), (137, 145839), (173, 115491), (281, 71103), (411, 48613), (519, 38497), (843, 23701)]