20979195

素因数分解:

$3^1\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1667}}^1$

素因数の和:2514

約数の個数: 16

約数和(自身を含む): 33626880

約数和(自身を除く): 12647685

約数列:

[1, 3, 5, 15, 839, 1667, 2517, 4195, 5001, 8335, 12585, 25005, 1398613, 4195839, 6993065, 20979195]

約数ペア:

[(1, 20979195), (3, 6993065), (5, 4195839), (15, 1398613), (839, 25005), (1667, 12585), (2517, 8335), (4195, 5001)]