21960125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{15971}}^1$

素因数の和:15997

約数の個数: 16

約数和(自身を含む): 29899584

約数和(自身を除く): 7939459

約数列:

[1, 5, 11, 25, 55, 125, 275, 1375, 15971, 79855, 175681, 399275, 878405, 1996375, 4392025, 21960125]

約数ペア:

[(1, 21960125), (5, 4392025), (11, 1996375), (25, 878405), (55, 399275), (125, 175681), (275, 79855), (1375, 15971)]