20894860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149249}}^1$

素因数の和:149265

約数の個数: 24

約数和(自身を含む): 50148000

約数和(自身を除く): 29253140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149249, 298498, 596996, 746245, 1044743, 1492490, 2089486, 2984980, 4178972, 5223715, 10447430, 20894860]

約数ペア:

[(1, 20894860), (2, 10447430), (4, 5223715), (5, 4178972), (7, 2984980), (10, 2089486), (14, 1492490), (20, 1044743), (28, 746245), (35, 596996), (70, 298498), (140, 149249)]