21285878

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1\times {\mathrm{919}}^1$

素因数の和:1271

約数の個数: 16

約数和(自身を含む): 32932320

約数和(自身を除く): 11646442

約数列:

[1, 2, 37, 74, 313, 626, 919, 1838, 11581, 23162, 34003, 68006, 287647, 575294, 10642939, 21285878]

約数ペア:

[(1, 21285878), (2, 10642939), (37, 575294), (74, 287647), (313, 68006), (626, 34003), (919, 23162), (1838, 11581)]