18828425

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9781}}^1$

素因数の和:9809

約数の個数: 24

約数和(自身を含む): 29111232

約数和(自身を除く): 10282807

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 9781, 48905, 68467, 107591, 244525, 342335, 537955, 753137, 1711675, 2689775, 3765685, 18828425]

約数ペア:

[(1, 18828425), (5, 3765685), (7, 2689775), (11, 1711675), (25, 753137), (35, 537955), (55, 342335), (77, 244525), (175, 107591), (275, 68467), (385, 48905), (1925, 9781)]