18785890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{26459}}^1$

素因数の和:26537

約数の個数: 16

約数和(自身を含む): 34292160

約数和(自身を除く): 15506270

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 26459, 52918, 132295, 264590, 1878589, 3757178, 9392945, 18785890]

約数ペア:

[(1, 18785890), (2, 9392945), (5, 3757178), (10, 1878589), (71, 264590), (142, 132295), (355, 52918), (710, 26459)]