1991238081

素因数分解:

$3^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{236461}}^1$

素因数の和:236872

約数の個数: 16

約数和(自身を含む): 3041847168

約数和(自身を除く): 1050609087

約数列:

[1, 3, 7, 21, 401, 1203, 2807, 8421, 236461, 709383, 1655227, 4965681, 94820861, 284462583, 663746027, 1991238081]

約数ペア:

[(1, 1991238081), (3, 663746027), (7, 284462583), (21, 94820861), (401, 4965681), (1203, 1655227), (2807, 709383), (8421, 236461)]