21681268

素因数分解:

$2^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{1931}}^1$

素因数の和:2343

約数の個数: 24

約数和(自身を含む): 43493184

約数和(自身を除く): 21811916

約数列:

[1, 2, 4, 7, 14, 28, 401, 802, 1604, 1931, 2807, 3862, 5614, 7724, 11228, 13517, 27034, 54068, 774331, 1548662, 3097324, 5420317, 10840634, 21681268]

約数ペア:

[(1, 21681268), (2, 10840634), (4, 5420317), (7, 3097324), (14, 1548662), (28, 774331), (401, 54068), (802, 27034), (1604, 13517), (1931, 11228), (2807, 7724), (3862, 5614)]