81107120

素因数分解:

$2^4\times 5^1\times {\mathrm{1013839}}^1$

素因数の和:1013852

約数の個数: 20

約数和(自身を含む): 188574240

約数和(自身を除く): 107467120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1013839, 2027678, 4055356, 5069195, 8110712, 10138390, 16221424, 20276780, 40553560, 81107120]

約数ペア:

[(1, 81107120), (2, 40553560), (4, 20276780), (5, 16221424), (8, 10138390), (10, 8110712), (16, 5069195), (20, 4055356), (40, 2027678), (80, 1013839)]