21128095

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{7669}}^1$

素因数の和:7722

約数の個数: 16

約数和(自身を含む): 27612000

約数和(自身を除く): 6483905

約数列:

[1, 5, 19, 29, 95, 145, 551, 2755, 7669, 38345, 145711, 222401, 728555, 1112005, 4225619, 21128095]

約数ペア:

[(1, 21128095), (5, 4225619), (19, 1112005), (29, 728555), (95, 222401), (145, 145711), (551, 38345), (2755, 7669)]