19778499

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{2087}}^1$

素因数の和:2118

約数の個数: 28

約数和(自身を含む): 31950576

約数和(自身を除く): 12172077

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 729, 1053, 2087, 3159, 6261, 9477, 18783, 27131, 56349, 81393, 169047, 244179, 507141, 732537, 1521423, 2197611, 6592833, 19778499]

約数ペア:

[(1, 19778499), (3, 6592833), (9, 2197611), (13, 1521423), (27, 732537), (39, 507141), (81, 244179), (117, 169047), (243, 81393), (351, 56349), (729, 27131), (1053, 18783), (2087, 9477), (3159, 6261)]