81338480

素因数分解:

$2^4\times 5^1\times {\mathrm{1016731}}^1$

素因数の和:1016744

約数の個数: 20

約数和(自身を含む): 189112152

約数和(自身を除く): 107773672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1016731, 2033462, 4066924, 5083655, 8133848, 10167310, 16267696, 20334620, 40669240, 81338480]

約数ペア:

[(1, 81338480), (2, 40669240), (4, 20334620), (5, 16267696), (8, 10167310), (10, 8133848), (16, 5083655), (20, 4066924), (40, 2033462), (80, 1016731)]