21026295

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6581}}^1$

素因数の和:6663

約数の個数: 24

約数和(自身を含む): 36964512

約数和(自身を除く): 15938217

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6581, 19743, 32905, 59229, 98715, 296145, 467251, 1401753, 2336255, 4205259, 7008765, 21026295]

約数ペア:

[(1, 21026295), (3, 7008765), (5, 4205259), (9, 2336255), (15, 1401753), (45, 467251), (71, 296145), (213, 98715), (355, 59229), (639, 32905), (1065, 19743), (3195, 6581)]