20572275

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6379}}^1$

素因数の和:6435

約数の個数: 24

約数和(自身を含む): 34809280

約数和(自身を除く): 14237005

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6379, 19137, 31895, 95685, 159475, 274297, 478425, 822891, 1371485, 4114455, 6857425, 20572275]

約数ペア:

[(1, 20572275), (3, 6857425), (5, 4114455), (15, 1371485), (25, 822891), (43, 478425), (75, 274297), (129, 159475), (215, 95685), (645, 31895), (1075, 19137), (3225, 6379)]