81977540

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{56149}}^1$

素因数の和:56231

約数の個数: 24

約数和(自身を含む): 174514200

約数和(自身を除く): 92536660

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 56149, 112298, 224596, 280745, 561490, 1122980, 4098877, 8197754, 16395508, 20494385, 40988770, 81977540]

約数ペア:

[(1, 81977540), (2, 40988770), (4, 20494385), (5, 16395508), (10, 8197754), (20, 4098877), (73, 1122980), (146, 561490), (292, 280745), (365, 224596), (730, 112298), (1460, 56149)]