196991180

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{4957}}^1$

素因数の和:6953

約数の個数: 24

約数和(自身を含む): 413973168

約数和(自身を除く): 216981988

約数列:

[1, 2, 4, 5, 10, 20, 1987, 3974, 4957, 7948, 9914, 9935, 19828, 19870, 24785, 39740, 49570, 99140, 9849559, 19699118, 39398236, 49247795, 98495590, 196991180]

約数ペア:

[(1, 196991180), (2, 98495590), (4, 49247795), (5, 39398236), (10, 19699118), (20, 9849559), (1987, 99140), (3974, 49570), (4957, 39740), (7948, 24785), (9914, 19870), (9935, 19828)]