21266931

素因数分解:

$3^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{727}}^1$

素因数の和:943

約数の個数: 24

約数和(自身を含む): 33196800

約数和(自身を除く): 11929869

約数列:

[1, 3, 7, 21, 49, 147, 199, 597, 727, 1393, 2181, 4179, 5089, 9751, 15267, 29253, 35623, 106869, 144673, 434019, 1012711, 3038133, 7088977, 21266931]

約数ペア:

[(1, 21266931), (3, 7088977), (7, 3038133), (21, 1012711), (49, 434019), (147, 144673), (199, 106869), (597, 35623), (727, 29253), (1393, 15267), (2181, 9751), (4179, 5089)]