19980752

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{1061}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 42666912

約数和(自身を除く): 22686160

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 107, 176, 214, 428, 856, 1061, 1177, 1712, 2122, 2354, 4244, 4708, 8488, 9416, 11671, 16976, 18832, 23342, 46684, 93368, 113527, 186736, 227054, 454108, 908216, 1248797, 1816432, 2497594, 4995188, 9990376, 19980752]

約数ペア:

[(1, 19980752), (2, 9990376), (4, 4995188), (8, 2497594), (11, 1816432), (16, 1248797), (22, 908216), (44, 454108), (88, 227054), (107, 186736), (176, 113527), (214, 93368), (428, 46684), (856, 23342), (1061, 18832), (1177, 16976), (1712, 11671), (2122, 9416), (2354, 8488), (4244, 4708)]