15678940120

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{197269}}^1$

素因数の和:199267

約数の個数: 32

約数和(自身を含む): 35295548400

約数和(自身を除く): 19616608280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 15896, 19870, 39740, 79480, 197269, 394538, 789076, 986345, 1578152, 1972690, 3945380, 7890760, 391973503, 783947006, 1567894012, 1959867515, 3135788024, 3919735030, 7839470060, 15678940120]

約数ペア:

[(1, 15678940120), (2, 7839470060), (4, 3919735030), (5, 3135788024), (8, 1959867515), (10, 1567894012), (20, 783947006), (40, 391973503), (1987, 7890760), (3974, 3945380), (7948, 1972690), (9935, 1578152), (15896, 986345), (19870, 789076), (39740, 394538), (79480, 197269)]