19992012155

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1409}}^1\times {\mathrm{2113}}^1$

素因数の和:3623

約数の個数: 32

約数和(自身を含む): 25753593600

約数和(自身を除く): 5761581445

約数列:

[1, 5, 17, 79, 85, 395, 1343, 1409, 2113, 6715, 7045, 10565, 23953, 35921, 111311, 119765, 166927, 179605, 556555, 834635, 1892287, 2837759, 2977217, 9461435, 14188795, 14886085, 50612689, 235200143, 253063445, 1176000715, 3998402431, 19992012155]

約数ペア:

[(1, 19992012155), (5, 3998402431), (17, 1176000715), (79, 253063445), (85, 235200143), (395, 50612689), (1343, 14886085), (1409, 14188795), (2113, 9461435), (6715, 2977217), (7045, 2837759), (10565, 1892287), (23953, 834635), (35921, 556555), (111311, 179605), (119765, 166927)]