20698460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 45480960

約数和(自身を除く): 24782500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 127, 145, 254, 281, 290, 508, 562, 580, 635, 1124, 1270, 1405, 2540, 2810, 3683, 5620, 7366, 8149, 14732, 16298, 18415, 32596, 35687, 36830, 40745, 71374, 73660, 81490, 142748, 162980, 178435, 356870, 713740, 1034923, 2069846, 4139692, 5174615, 10349230, 20698460]

約数ペア:

[(1, 20698460), (2, 10349230), (4, 5174615), (5, 4139692), (10, 2069846), (20, 1034923), (29, 713740), (58, 356870), (116, 178435), (127, 162980), (145, 142748), (254, 81490), (281, 73660), (290, 71374), (508, 40745), (562, 36830), (580, 35687), (635, 32596), (1124, 18415), (1270, 16298), (1405, 14732), (2540, 8149), (2810, 7366), (3683, 5620)]