21401577

素因数分解:

$3^4\times {\mathrm{37}}^2\times {\mathrm{193}}^1$

素因数の和:279

約数の個数: 30

約数和(自身を含む): 33027918

約数和(自身を除く): 11626341

約数列:

[1, 3, 9, 27, 37, 81, 111, 193, 333, 579, 999, 1369, 1737, 2997, 4107, 5211, 7141, 12321, 15633, 21423, 36963, 64269, 110889, 192807, 264217, 578421, 792651, 2377953, 7133859, 21401577]

約数ペア:

[(1, 21401577), (3, 7133859), (9, 2377953), (27, 792651), (37, 578421), (81, 264217), (111, 192807), (193, 110889), (333, 64269), (579, 36963), (999, 21423), (1369, 15633), (1737, 12321), (2997, 7141), (4107, 5211)]