20158396540

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1301}}^1\times {\mathrm{1487}}^1$

素因数の和:3318

約数の個数: 48

約数和(自身を含む): 42475031424

約数和(自身を除く): 22316634884

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 1301, 1487, 2084, 2602, 2605, 2974, 5204, 5210, 5948, 6505, 7435, 10420, 13010, 14870, 26020, 29740, 677821, 774727, 1355642, 1549454, 1934587, 2711284, 3098908, 3389105, 3869174, 3873635, 6778210, 7738348, 7747270, 9672935, 13556420, 15494540, 19345870, 38691740, 1007919827, 2015839654, 4031679308, 5039599135, 10079198270, 20158396540]

約数ペア:

[(1, 20158396540), (2, 10079198270), (4, 5039599135), (5, 4031679308), (10, 2015839654), (20, 1007919827), (521, 38691740), (1042, 19345870), (1301, 15494540), (1487, 13556420), (2084, 9672935), (2602, 7747270), (2605, 7738348), (2974, 6778210), (5204, 3873635), (5210, 3869174), (5948, 3389105), (6505, 3098908), (7435, 2711284), (10420, 1934587), (13010, 1549454), (14870, 1355642), (26020, 774727), (29740, 677821)]