20376531

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 16314669

約数列:

[1, 3, 7, 9, 19, 21, 29, 57, 63, 87, 133, 171, 203, 261, 399, 551, 587, 609, 1197, 1653, 1761, 1827, 3857, 4109, 4959, 5283, 11153, 11571, 12327, 17023, 33459, 34713, 36981, 51069, 78071, 100377, 119161, 153207, 234213, 323437, 357483, 702639, 970311, 1072449, 2264059, 2910933, 6792177, 20376531]

約数ペア:

[(1, 20376531), (3, 6792177), (7, 2910933), (9, 2264059), (19, 1072449), (21, 970311), (29, 702639), (57, 357483), (63, 323437), (87, 234213), (133, 153207), (171, 119161), (203, 100377), (261, 78071), (399, 51069), (551, 36981), (587, 34713), (609, 33459), (1197, 17023), (1653, 12327), (1761, 11571), (1827, 11153), (3857, 5283), (4109, 4959)]