21591928

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6599}}^1$

素因数の和:7014

約数の個数: 16

約数和(自身を含む): 40590000

約数和(自身を除く): 18998072

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6599, 13198, 26396, 52792, 2698991, 5397982, 10795964, 21591928]

約数ペア:

[(1, 21591928), (2, 10795964), (4, 5397982), (8, 2698991), (409, 52792), (818, 26396), (1636, 13198), (3272, 6599)]