81031640

素因数分解:

$2^3\times 5^1\times {\mathrm{2025791}}^1$

素因数の和:2025802

約数の個数: 16

約数和(自身を含む): 182321280

約数和(自身を除く): 101289640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2025791, 4051582, 8103164, 10128955, 16206328, 20257910, 40515820, 81031640]

約数ペア:

[(1, 81031640), (2, 40515820), (4, 20257910), (5, 16206328), (8, 10128955), (10, 8103164), (20, 4051582), (40, 2025791)]