19889744

素因数分解:

$2^4\times 7^1\times {\mathrm{257}}^1\times {\mathrm{691}}^1$

素因数の和:963

約数の個数: 40

約数和(自身を含む): 44276928

約数和(自身を除く): 24387184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 257, 514, 691, 1028, 1382, 1799, 2056, 2764, 3598, 4112, 4837, 5528, 7196, 9674, 11056, 14392, 19348, 28784, 38696, 77392, 177587, 355174, 710348, 1243109, 1420696, 2486218, 2841392, 4972436, 9944872, 19889744]

約数ペア:

[(1, 19889744), (2, 9944872), (4, 4972436), (7, 2841392), (8, 2486218), (14, 1420696), (16, 1243109), (28, 710348), (56, 355174), (112, 177587), (257, 77392), (514, 38696), (691, 28784), (1028, 19348), (1382, 14392), (1799, 11056), (2056, 9674), (2764, 7196), (3598, 5528), (4112, 4837)]