40389680

素因数分解:

$2^4\times 5^1\times {\mathrm{504871}}^1$

素因数の和:504884

約数の個数: 20

約数和(自身を含む): 93906192

約数和(自身を除く): 53516512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 504871, 1009742, 2019484, 2524355, 4038968, 5048710, 8077936, 10097420, 20194840, 40389680]

約数ペア:

[(1, 40389680), (2, 20194840), (4, 10097420), (5, 8077936), (8, 5048710), (10, 4038968), (16, 2524355), (20, 2019484), (40, 1009742), (80, 504871)]