21452275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 28904400

約数和(自身を除く): 7452125

約数列:

[1, 5, 13, 25, 65, 149, 325, 443, 745, 1937, 2215, 3725, 5759, 9685, 11075, 28795, 48425, 66007, 143975, 330035, 858091, 1650175, 4290455, 21452275]

約数ペア:

[(1, 21452275), (5, 4290455), (13, 1650175), (25, 858091), (65, 330035), (149, 143975), (325, 66007), (443, 48425), (745, 28795), (1937, 11075), (2215, 9685), (3725, 5759)]