211991090

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{298579}}^1$

素因数の和:298657

約数の個数: 16

約数和(自身を含む): 386959680

約数和(自身を除く): 174968590

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 298579, 597158, 1492895, 2985790, 21199109, 42398218, 105995545, 211991090]

約数ペア:

[(1, 211991090), (2, 105995545), (5, 42398218), (10, 21199109), (71, 2985790), (142, 1492895), (355, 597158), (710, 298579)]