21590817

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1\times {\mathrm{659}}^1$

素因数の和:892

約数の個数: 16

約数和(自身を含む): 29441280

約数和(自身を除く): 7850463

約数列:

[1, 3, 67, 163, 201, 489, 659, 1977, 10921, 32763, 44153, 107417, 132459, 322251, 7196939, 21590817]

約数ペア:

[(1, 21590817), (3, 7196939), (67, 322251), (163, 132459), (201, 107417), (489, 44153), (659, 32763), (1977, 10921)]