21161516

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{383}}^1\times {\mathrm{727}}^1$

素因数の和:1133

約数の個数: 24

約数和(自身を含む): 39137280

約数和(自身を除く): 17975764

約数列:

[1, 2, 4, 19, 38, 76, 383, 727, 766, 1454, 1532, 2908, 7277, 13813, 14554, 27626, 29108, 55252, 278441, 556882, 1113764, 5290379, 10580758, 21161516]

約数ペア:

[(1, 21161516), (2, 10580758), (4, 5290379), (19, 1113764), (38, 556882), (76, 278441), (383, 55252), (727, 29108), (766, 27626), (1454, 14554), (1532, 13813), (2908, 7277)]