21465591

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 33965568

約数和(自身を除く): 12499977

約数列:

[1, 3, 7, 21, 41, 107, 123, 233, 287, 321, 699, 749, 861, 1631, 2247, 4387, 4893, 9553, 13161, 24931, 28659, 30709, 66871, 74793, 92127, 174517, 200613, 523551, 1022171, 3066513, 7155197, 21465591]

約数ペア:

[(1, 21465591), (3, 7155197), (7, 3066513), (21, 1022171), (41, 523551), (107, 200613), (123, 174517), (233, 92127), (287, 74793), (321, 66871), (699, 30709), (749, 28659), (861, 24931), (1631, 13161), (2247, 9553), (4387, 4893)]