18999454

素因数分解:

$2^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1\times {\mathrm{571}}^1$

素因数の和:831

約数の個数: 16

約数和(自身を含む): 28993536

約数和(自身を除く): 9994082

約数列:

[1, 2, 127, 131, 254, 262, 571, 1142, 16637, 33274, 72517, 74801, 145034, 149602, 9499727, 18999454]

約数ペア:

[(1, 18999454), (2, 9499727), (127, 149602), (131, 145034), (254, 74801), (262, 72517), (571, 33274), (1142, 16637)]