21372860

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3803}}^1$

素因数の和:4093

約数の個数: 24

約数和(自身を含む): 45054576

約数和(自身を除く): 23681716

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3803, 5620, 7606, 15212, 19015, 38030, 76060, 1068643, 2137286, 4274572, 5343215, 10686430, 21372860]

約数ペア:

[(1, 21372860), (2, 10686430), (4, 5343215), (5, 4274572), (10, 2137286), (20, 1068643), (281, 76060), (562, 38030), (1124, 19015), (1405, 15212), (2810, 7606), (3803, 5620)]