20008907540

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2053}}^1\times {\mathrm{3557}}^1$

素因数の和:5756

約数の個数: 48

約数和(自身を含む): 42357933072

約数和(自身を除く): 22349025532

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2053, 2740, 3557, 4106, 7114, 8212, 10265, 14228, 17785, 20530, 35570, 41060, 71140, 281261, 487309, 562522, 974618, 1125044, 1406305, 1949236, 2436545, 2812610, 4873090, 5625220, 7302521, 9746180, 14605042, 29210084, 36512605, 73025210, 146050420, 1000445377, 2000890754, 4001781508, 5002226885, 10004453770, 20008907540]

約数ペア:

[(1, 20008907540), (2, 10004453770), (4, 5002226885), (5, 4001781508), (10, 2000890754), (20, 1000445377), (137, 146050420), (274, 73025210), (548, 36512605), (685, 29210084), (1370, 14605042), (2053, 9746180), (2740, 7302521), (3557, 5625220), (4106, 4873090), (7114, 2812610), (8212, 2436545), (10265, 1949236), (14228, 1406305), (17785, 1125044), (20530, 974618), (35570, 562522), (41060, 487309), (71140, 281261)]