20201271385

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{17509}}^1$

素因数の和:17725

約数の個数: 32

約数和(自身を含む): 25655652000

約数和(自身を除く): 5454380615

約数列:

[1, 5, 29, 73, 109, 145, 365, 545, 2117, 3161, 7957, 10585, 15805, 17509, 39785, 87545, 230753, 507761, 1153765, 1278157, 1908481, 2538805, 6390785, 9542405, 37066553, 55345949, 139319113, 185332765, 276729745, 696595565, 4040254277, 20201271385]

約数ペア:

[(1, 20201271385), (5, 4040254277), (29, 696595565), (73, 276729745), (109, 185332765), (145, 139319113), (365, 55345949), (545, 37066553), (2117, 9542405), (3161, 6390785), (7957, 2538805), (10585, 1908481), (15805, 1278157), (17509, 1153765), (39785, 507761), (87545, 230753)]