664625665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{66763}}^1$

素因数の和:66960

約数の個数: 16

約数和(自身を含む): 874875456

約数和(自身を除く): 210249791

約数列:

[1, 5, 11, 55, 181, 905, 1991, 9955, 66763, 333815, 734393, 3671965, 12084103, 60420515, 132925133, 664625665]

約数ペア:

[(1, 664625665), (5, 132925133), (11, 60420515), (55, 12084103), (181, 3671965), (905, 734393), (1991, 333815), (9955, 66763)]