81151240

素因数分解:

$2^3\times 5^1\times {\mathrm{2028781}}^1$

素因数の和:2028792

約数の個数: 16

約数和(自身を含む): 182590380

約数和(自身を除く): 101439140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2028781, 4057562, 8115124, 10143905, 16230248, 20287810, 40575620, 81151240]

約数ペア:

[(1, 81151240), (2, 40575620), (4, 20287810), (5, 16230248), (8, 10143905), (10, 8115124), (20, 4057562), (40, 2028781)]