81213140

素因数分解:

$2^2\times 5^1\times {\mathrm{751}}^1\times {\mathrm{5407}}^1$

素因数の和:6167

約数の個数: 24

約数和(自身を含む): 170806272

約数和(自身を除く): 89593132

約数列:

[1, 2, 4, 5, 10, 20, 751, 1502, 3004, 3755, 5407, 7510, 10814, 15020, 21628, 27035, 54070, 108140, 4060657, 8121314, 16242628, 20303285, 40606570, 81213140]

約数ペア:

[(1, 81213140), (2, 40606570), (4, 20303285), (5, 16242628), (10, 8121314), (20, 4060657), (751, 108140), (1502, 54070), (3004, 27035), (3755, 21628), (5407, 15020), (7510, 10814)]