81007580

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{8317}}^1$

素因数の和:8813

約数の個数: 24

約数和(自身を含む): 170485728

約数和(自身を除く): 89478148

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1948, 2435, 4870, 8317, 9740, 16634, 33268, 41585, 83170, 166340, 4050379, 8100758, 16201516, 20251895, 40503790, 81007580]

約数ペア:

[(1, 81007580), (2, 40503790), (4, 20251895), (5, 16201516), (10, 8100758), (20, 4050379), (487, 166340), (974, 83170), (1948, 41585), (2435, 33268), (4870, 16634), (8317, 9740)]