21156968

素因数分解:

$2^3\times 7^1\times {\mathrm{467}}^1\times {\mathrm{809}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 45489600

約数和(自身を除く): 24332632

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 467, 809, 934, 1618, 1868, 3236, 3269, 3736, 5663, 6472, 6538, 11326, 13076, 22652, 26152, 45304, 377803, 755606, 1511212, 2644621, 3022424, 5289242, 10578484, 21156968]

約数ペア:

[(1, 21156968), (2, 10578484), (4, 5289242), (7, 3022424), (8, 2644621), (14, 1511212), (28, 755606), (56, 377803), (467, 45304), (809, 26152), (934, 22652), (1618, 13076), (1868, 11326), (3236, 6538), (3269, 6472), (3736, 5663)]