19965988

素因数分解:

$2^2\times 7^1\times {\mathrm{499}}^1\times {\mathrm{1429}}^1$

素因数の和:1939

約数の個数: 24

約数和(自身を含む): 40040000

約数和(自身を除く): 20074012

約数列:

[1, 2, 4, 7, 14, 28, 499, 998, 1429, 1996, 2858, 3493, 5716, 6986, 10003, 13972, 20006, 40012, 713071, 1426142, 2852284, 4991497, 9982994, 19965988]

約数ペア:

[(1, 19965988), (2, 9982994), (4, 4991497), (7, 2852284), (14, 1426142), (28, 713071), (499, 40012), (998, 20006), (1429, 13972), (1996, 10003), (2858, 6986), (3493, 5716)]