28391913

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{337}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 48087936

約数和(自身を除く): 19696023

約数列:

[1, 3, 9, 11, 23, 33, 37, 69, 99, 111, 207, 253, 333, 337, 407, 759, 851, 1011, 1221, 2277, 2553, 3033, 3663, 3707, 7659, 7751, 9361, 11121, 12469, 23253, 28083, 33363, 37407, 69759, 84249, 85261, 112221, 137159, 255783, 286787, 411477, 767349, 860361, 1234431, 2581083, 3154657, 9463971, 28391913]

約数ペア:

[(1, 28391913), (3, 9463971), (9, 3154657), (11, 2581083), (23, 1234431), (33, 860361), (37, 767349), (69, 411477), (99, 286787), (111, 255783), (207, 137159), (253, 112221), (333, 85261), (337, 84249), (407, 69759), (759, 37407), (851, 33363), (1011, 28083), (1221, 23253), (2277, 12469), (2553, 11121), (3033, 9361), (3663, 7751), (3707, 7659)]