21130912

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{347}}^1$

素因数の和:541

約数の個数: 48

約数和(自身を含む): 45777312

約数和(自身を除く): 24646400

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 173, 176, 346, 347, 352, 692, 694, 1384, 1388, 1903, 2768, 2776, 3806, 3817, 5536, 5552, 7612, 7634, 11104, 15224, 15268, 30448, 30536, 60031, 60896, 61072, 120062, 122144, 240124, 480248, 660341, 960496, 1320682, 1920992, 2641364, 5282728, 10565456, 21130912]

約数ペア:

[(1, 21130912), (2, 10565456), (4, 5282728), (8, 2641364), (11, 1920992), (16, 1320682), (22, 960496), (32, 660341), (44, 480248), (88, 240124), (173, 122144), (176, 120062), (346, 61072), (347, 60896), (352, 60031), (692, 30536), (694, 30448), (1384, 15268), (1388, 15224), (1903, 11104), (2768, 7634), (2776, 7612), (3806, 5552), (3817, 5536)]