21168771

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1043

約数の個数: 24

約数和(自身を含む): 31306176

約数和(自身を除く): 10137405

約数列:

[1, 3, 13, 39, 43, 129, 169, 507, 559, 971, 1677, 2913, 7267, 12623, 21801, 37869, 41753, 125259, 164099, 492297, 542789, 1628367, 7056257, 21168771]

約数ペア:

[(1, 21168771), (3, 7056257), (13, 1628367), (39, 542789), (43, 492297), (129, 164099), (169, 125259), (507, 41753), (559, 37869), (971, 21801), (1677, 12623), (2913, 7267)]