20197870868

素因数分解:

$2^2\times 7^1\times {\mathrm{721352531}}^1$

素因数の和:721352542

約数の個数: 12

約数和(自身を含む): 40395741792

約数和(自身を除く): 20197870924

約数列:

[1, 2, 4, 7, 14, 28, 721352531, 1442705062, 2885410124, 5049467717, 10098935434, 20197870868]

約数ペア:

[(1, 20197870868), (2, 10098935434), (4, 5049467717), (7, 2885410124), (14, 1442705062), (28, 721352531)]