19711971

素因数分解:

$3^3\times {\mathrm{73}}^2\times {\mathrm{137}}^1$

素因数の和:292

約数の個数: 24

約数和(自身を含む): 29824560

約数和(自身を除く): 10112589

約数列:

[1, 3, 9, 27, 73, 137, 219, 411, 657, 1233, 1971, 3699, 5329, 10001, 15987, 30003, 47961, 90009, 143883, 270027, 730073, 2190219, 6570657, 19711971]

約数ペア:

[(1, 19711971), (3, 6570657), (9, 2190219), (27, 730073), (73, 270027), (137, 143883), (219, 90009), (411, 47961), (657, 30003), (1233, 15987), (1971, 10001), (3699, 5329)]