21890185

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{7433}}^1$

素因数の和:7488

約数の個数: 16

約数和(自身を含む): 28546560

約数和(自身を除く): 6656375

約数列:

[1, 5, 19, 31, 95, 155, 589, 2945, 7433, 37165, 141227, 230423, 706135, 1152115, 4378037, 21890185]

約数ペア:

[(1, 21890185), (5, 4378037), (19, 1152115), (31, 706135), (95, 230423), (155, 141227), (589, 37165), (2945, 7433)]