81980345

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{281}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 108017280

約数和(自身を除く): 26036935

約数列:

[1, 5, 19, 37, 83, 95, 185, 281, 415, 703, 1405, 1577, 3071, 3515, 5339, 7885, 10397, 15355, 23323, 26695, 51985, 58349, 116615, 197543, 291745, 443137, 862951, 987715, 2215685, 4314755, 16396069, 81980345]

約数ペア:

[(1, 81980345), (5, 16396069), (19, 4314755), (37, 2215685), (83, 987715), (95, 862951), (185, 443137), (281, 291745), (415, 197543), (703, 116615), (1405, 58349), (1577, 51985), (3071, 26695), (3515, 23323), (5339, 15355), (7885, 10397)]