402745030

素因数分解:

$2^1\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{20269}}^1$

素因数の和:22263

約数の個数: 16

約数和(自身を含む): 725341680

約数和(自身を除く): 322596650

約数列:

[1, 2, 5, 10, 1987, 3974, 9935, 19870, 20269, 40538, 101345, 202690, 40274503, 80549006, 201372515, 402745030]

約数ペア:

[(1, 402745030), (2, 201372515), (5, 80549006), (10, 40274503), (1987, 202690), (3974, 101345), (9935, 40538), (19870, 20269)]