21268767

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 11019489

約数列:

[1, 3, 13, 23, 39, 69, 131, 181, 299, 393, 543, 897, 1703, 2353, 3013, 4163, 5109, 7059, 9039, 12489, 23711, 39169, 54119, 71133, 117507, 162357, 308243, 545353, 924729, 1636059, 7089589, 21268767]

約数ペア:

[(1, 21268767), (3, 7089589), (13, 1636059), (23, 924729), (39, 545353), (69, 308243), (131, 162357), (181, 117507), (299, 71133), (393, 54119), (543, 39169), (897, 23711), (1703, 12489), (2353, 9039), (3013, 7059), (4163, 5109)]