21672315

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{643}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 43400448

約数和(自身を除く): 21728133

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 107, 315, 321, 535, 643, 749, 963, 1605, 1929, 2247, 3215, 3745, 4501, 4815, 5787, 6741, 9645, 11235, 13503, 22505, 28935, 33705, 40509, 67515, 68801, 202545, 206403, 344005, 481607, 619209, 1032015, 1444821, 2408035, 3096045, 4334463, 7224105, 21672315]

約数ペア:

[(1, 21672315), (3, 7224105), (5, 4334463), (7, 3096045), (9, 2408035), (15, 1444821), (21, 1032015), (35, 619209), (45, 481607), (63, 344005), (105, 206403), (107, 202545), (315, 68801), (321, 67515), (535, 40509), (643, 33705), (749, 28935), (963, 22505), (1605, 13503), (1929, 11235), (2247, 9645), (3215, 6741), (3745, 5787), (4501, 4815)]