21597125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 29877120

約数和(自身を除く): 8279995

約数列:

[1, 5, 11, 25, 55, 113, 125, 139, 275, 565, 695, 1243, 1375, 1529, 2825, 3475, 6215, 7645, 14125, 15707, 17375, 31075, 38225, 78535, 155375, 172777, 191125, 392675, 863885, 1963375, 4319425, 21597125]

約数ペア:

[(1, 21597125), (5, 4319425), (11, 1963375), (25, 863885), (55, 392675), (113, 191125), (125, 172777), (139, 155375), (275, 78535), (565, 38225), (695, 31075), (1243, 17375), (1375, 15707), (1529, 14125), (2825, 7645), (3475, 6215)]