20451885

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71761}}^1$

素因数の和:71788

約数の個数: 16

約数和(自身を含む): 34445760

約数和(自身を除く): 13993875

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 71761, 215283, 358805, 1076415, 1363459, 4090377, 6817295, 20451885]

約数ペア:

[(1, 20451885), (3, 6817295), (5, 4090377), (15, 1363459), (19, 1076415), (57, 358805), (95, 215283), (285, 71761)]