1998111

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:470

約数の個数: 16

約数和(自身を含む): 2801664

約数和(自身を除く): 803553

約数列:

[1, 3, 37, 47, 111, 141, 383, 1149, 1739, 5217, 14171, 18001, 42513, 54003, 666037, 1998111]

約数ペア:

[(1, 1998111), (3, 666037), (37, 54003), (47, 42513), (111, 18001), (141, 14171), (383, 5217), (1149, 1739)]