28217980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{201557}}^1$

素因数の和:201573

約数の個数: 24

約数和(自身を含む): 67723488

約数和(自身を除く): 39505508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 201557, 403114, 806228, 1007785, 1410899, 2015570, 2821798, 4031140, 5643596, 7054495, 14108990, 28217980]

約数ペア:

[(1, 28217980), (2, 14108990), (4, 7054495), (5, 5643596), (7, 4031140), (10, 2821798), (14, 2015570), (20, 1410899), (28, 1007785), (35, 806228), (70, 403114), (140, 201557)]