19518813

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{3301}}^1$

素因数の和:3386

約数の個数: 20

約数和(自身を含む): 29566108

約数和(自身を除く): 10047295

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 3301, 5913, 9903, 29709, 89127, 240973, 267381, 722919, 2168757, 6506271, 19518813]

約数ペア:

[(1, 19518813), (3, 6506271), (9, 2168757), (27, 722919), (73, 267381), (81, 240973), (219, 89127), (657, 29709), (1971, 9903), (3301, 5913)]