21847581

素因数分解:

$3^2\times 7^2\times {\mathrm{107}}^1\times {\mathrm{463}}^1$

素因数の和:590

約数の個数: 36

約数和(自身を含む): 37132992

約数和(自身を除く): 15285411

約数列:

[1, 3, 7, 9, 21, 49, 63, 107, 147, 321, 441, 463, 749, 963, 1389, 2247, 3241, 4167, 5243, 6741, 9723, 15729, 22687, 29169, 47187, 49541, 68061, 148623, 204183, 346787, 445869, 1040361, 2427509, 3121083, 7282527, 21847581]

約数ペア:

[(1, 21847581), (3, 7282527), (7, 3121083), (9, 2427509), (21, 1040361), (49, 445869), (63, 346787), (107, 204183), (147, 148623), (321, 68061), (441, 49541), (463, 47187), (749, 29169), (963, 22687), (1389, 15729), (2247, 9723), (3241, 6741), (4167, 5243)]