21977128

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{2203}}^1$

素因数の和:2281

約数の個数: 32

約数和(自身を含む): 43639200

約数和(自身を除く): 21662072

約数列:

[1, 2, 4, 8, 29, 43, 58, 86, 116, 172, 232, 344, 1247, 2203, 2494, 4406, 4988, 8812, 9976, 17624, 63887, 94729, 127774, 189458, 255548, 378916, 511096, 757832, 2747141, 5494282, 10988564, 21977128]

約数ペア:

[(1, 21977128), (2, 10988564), (4, 5494282), (8, 2747141), (29, 757832), (43, 511096), (58, 378916), (86, 255548), (116, 189458), (172, 127774), (232, 94729), (344, 63887), (1247, 17624), (2203, 9976), (2494, 8812), (4406, 4988)]