20187425

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 26025120

約数和(自身を除く): 5837695

約数列:

[1, 5, 25, 43, 89, 211, 215, 445, 1055, 1075, 2225, 3827, 5275, 9073, 18779, 19135, 45365, 93895, 95675, 226825, 469475, 807497, 4037485, 20187425]

約数ペア:

[(1, 20187425), (5, 4037485), (25, 807497), (43, 469475), (89, 226825), (211, 95675), (215, 93895), (445, 45365), (1055, 19135), (1075, 18779), (2225, 9073), (3827, 5275)]