21809611090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{24505181}}^1$

素因数の和:24505277

約数の個数: 16

約数和(自身を含む): 39698394840

約数和(自身を除く): 17888783750

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 24505181, 49010362, 122525905, 245051810, 2180961109, 4361922218, 10904805545, 21809611090]

約数ペア:

[(1, 21809611090), (2, 10904805545), (5, 4361922218), (10, 2180961109), (89, 245051810), (178, 122525905), (445, 49010362), (890, 24505181)]