81470140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{177109}}^1$

素因数の和:177141

約数の個数: 24

約数和(自身を含む): 178526880

約数和(自身を除く): 97056740

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 177109, 354218, 708436, 885545, 1771090, 3542180, 4073507, 8147014, 16294028, 20367535, 40735070, 81470140]

約数ペア:

[(1, 81470140), (2, 40735070), (4, 20367535), (5, 16294028), (10, 8147014), (20, 4073507), (23, 3542180), (46, 1771090), (92, 885545), (115, 708436), (230, 354218), (460, 177109)]