19800729

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2039}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 31187520

約数和(自身を除く): 11386791

約数列:

[1, 3, 9, 13, 39, 83, 117, 249, 747, 1079, 2039, 3237, 6117, 9711, 18351, 26507, 79521, 169237, 238563, 507711, 1523133, 2200081, 6600243, 19800729]

約数ペア:

[(1, 19800729), (3, 6600243), (9, 2200081), (13, 1523133), (39, 507711), (83, 238563), (117, 169237), (249, 79521), (747, 26507), (1079, 18351), (2039, 9711), (3237, 6117)]