19486905

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 32237568

約数和(自身を除く): 12750663

約数列:

[1, 3, 5, 15, 47, 131, 141, 211, 235, 393, 633, 655, 705, 1055, 1965, 3165, 6157, 9917, 18471, 27641, 29751, 30785, 49585, 82923, 92355, 138205, 148755, 414615, 1299127, 3897381, 6495635, 19486905]

約数ペア:

[(1, 19486905), (3, 6495635), (5, 3897381), (15, 1299127), (47, 414615), (131, 148755), (141, 138205), (211, 92355), (235, 82923), (393, 49585), (633, 30785), (655, 29751), (705, 27641), (1055, 18471), (1965, 9917), (3165, 6157)]