21375003

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{3943}}^1$

素因数の和:4098

約数の個数: 16

約数和(自身を含む): 30920960

約数和(自身を除く): 9545957

約数列:

[1, 3, 13, 39, 139, 417, 1807, 3943, 5421, 11829, 51259, 153777, 548077, 1644231, 7125001, 21375003]

約数ペア:

[(1, 21375003), (3, 7125001), (13, 1644231), (39, 548077), (139, 153777), (417, 51259), (1807, 11829), (3943, 5421)]