21146972

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68659}}^1$

素因数の和:68681

約数の個数: 24

約数和(自身を含む): 46139520

約数和(自身を除く): 24992548

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68659, 137318, 274636, 480613, 755249, 961226, 1510498, 1922452, 3020996, 5286743, 10573486, 21146972]

約数ペア:

[(1, 21146972), (2, 10573486), (4, 5286743), (7, 3020996), (11, 1922452), (14, 1510498), (22, 961226), (28, 755249), (44, 480613), (77, 274636), (154, 137318), (308, 68659)]