21238675

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{733}}^1$

素因数の和:823

約数の個数: 24

約数和(自身を含む): 28214960

約数和(自身を除く): 6976285

約数列:

[1, 5, 19, 25, 61, 95, 305, 475, 733, 1159, 1525, 3665, 5795, 13927, 18325, 28975, 44713, 69635, 223565, 348175, 849547, 1117825, 4247735, 21238675]

約数ペア:

[(1, 21238675), (5, 4247735), (19, 1117825), (25, 849547), (61, 348175), (95, 223565), (305, 69635), (475, 44713), (733, 28975), (1159, 18325), (1525, 13927), (3665, 5795)]