20541315

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31847}}^1$

素因数の和:31898

約数の個数: 16

約数和(自身を含む): 33631488

約数和(自身を除く): 13090173

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31847, 95541, 159235, 477705, 1369421, 4108263, 6847105, 20541315]

約数ペア:

[(1, 20541315), (3, 6847105), (5, 4108263), (15, 1369421), (43, 477705), (129, 159235), (215, 95541), (645, 31847)]