21189608

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{619}}^1$

素因数の和:1025

約数の個数: 32

約数和(自身を含む): 43524000

約数和(自身を除く): 22334392

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 389, 619, 778, 1238, 1556, 2476, 3112, 4279, 4952, 6809, 8558, 13618, 17116, 27236, 34232, 54472, 240791, 481582, 963164, 1926328, 2648701, 5297402, 10594804, 21189608]

約数ペア:

[(1, 21189608), (2, 10594804), (4, 5297402), (8, 2648701), (11, 1926328), (22, 963164), (44, 481582), (88, 240791), (389, 54472), (619, 34232), (778, 27236), (1238, 17116), (1556, 13618), (2476, 8558), (3112, 6809), (4279, 4952)]