21885759

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 38176320

約数和(自身を除く): 16290561

約数列:

[1, 3, 7, 9, 21, 37, 41, 63, 111, 123, 229, 259, 287, 333, 369, 687, 777, 861, 1517, 1603, 2061, 2331, 2583, 4551, 4809, 8473, 9389, 10619, 13653, 14427, 25419, 28167, 31857, 59311, 65723, 76257, 84501, 95571, 177933, 197169, 347393, 533799, 591507, 1042179, 2431751, 3126537, 7295253, 21885759]

約数ペア:

[(1, 21885759), (3, 7295253), (7, 3126537), (9, 2431751), (21, 1042179), (37, 591507), (41, 533799), (63, 347393), (111, 197169), (123, 177933), (229, 95571), (259, 84501), (287, 76257), (333, 65723), (369, 59311), (687, 31857), (777, 28167), (861, 25419), (1517, 14427), (1603, 13653), (2061, 10619), (2331, 9389), (2583, 8473), (4551, 4809)]