81580304

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{392213}}^1$

素因数の和:392234

約数の個数: 20

約数和(自身を含む): 170220876

約数和(自身を除く): 88640572

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 392213, 784426, 1568852, 3137704, 5098769, 6275408, 10197538, 20395076, 40790152, 81580304]

約数ペア:

[(1, 81580304), (2, 40790152), (4, 20395076), (8, 10197538), (13, 6275408), (16, 5098769), (26, 3137704), (52, 1568852), (104, 784426), (208, 392213)]