21489412

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18719}}^1$

素因数の和:18771

約数の個数: 24

約数和(自身を含む): 44029440

約数和(自身を除く): 22540028

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18719, 37438, 74876, 131033, 262066, 524132, 767479, 1534958, 3069916, 5372353, 10744706, 21489412]

約数ペア:

[(1, 21489412), (2, 10744706), (4, 5372353), (7, 3069916), (14, 1534958), (28, 767479), (41, 524132), (82, 262066), (164, 131033), (287, 74876), (574, 37438), (1148, 18719)]