81817940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{240641}}^1$

素因数の和:240667

約数の個数: 24

約数和(自身を含む): 181925352

約数和(自身を除く): 100107412

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 240641, 481282, 962564, 1203205, 2406410, 4090897, 4812820, 8181794, 16363588, 20454485, 40908970, 81817940]

約数ペア:

[(1, 81817940), (2, 40908970), (4, 20454485), (5, 16363588), (10, 8181794), (17, 4812820), (20, 4090897), (34, 2406410), (68, 1203205), (85, 962564), (170, 481282), (340, 240641)]