20642145

素因数分解:

$3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{7603}}^1$

素因数の和:7792

約数の個数: 16

約数和(自身を含む): 33214272

約数和(自身を除く): 12572127

約数列:

[1, 3, 5, 15, 181, 543, 905, 2715, 7603, 22809, 38015, 114045, 1376143, 4128429, 6880715, 20642145]

約数ペア:

[(1, 20642145), (3, 6880715), (5, 4128429), (15, 1376143), (181, 114045), (543, 38015), (905, 22809), (2715, 7603)]