19980381

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{2099}}^1$

素因数の和:2288

約数の個数: 16

約数和(自身を含む): 28224000

約数和(自身を除く): 8243619

約数列:

[1, 3, 19, 57, 167, 501, 2099, 3173, 6297, 9519, 39881, 119643, 350533, 1051599, 6660127, 19980381]

約数ペア:

[(1, 19980381), (3, 6660127), (19, 1051599), (57, 350533), (167, 119643), (501, 39881), (2099, 9519), (3173, 6297)]