19980795

素因数分解:

$3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{2617}}^1$

素因数の和:3134

約数の個数: 16

約数和(自身を含む): 32044320

約数和(自身を除く): 12063525

約数列:

[1, 3, 5, 15, 509, 1527, 2545, 2617, 7635, 7851, 13085, 39255, 1332053, 3996159, 6660265, 19980795]

約数ペア:

[(1, 19980795), (3, 6660265), (5, 3996159), (15, 1332053), (509, 39255), (1527, 13085), (2545, 7851), (2617, 7635)]