21821013

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1123}}^1$

素因数の和:1273

約数の個数: 24

約数和(自身を含む): 33666048

約数和(自身を除く): 11845035

約数列:

[1, 3, 9, 17, 51, 127, 153, 381, 1123, 1143, 2159, 3369, 6477, 10107, 19091, 19431, 57273, 142621, 171819, 427863, 1283589, 2424557, 7273671, 21821013]

約数ペア:

[(1, 21821013), (3, 7273671), (9, 2424557), (17, 1283589), (51, 427863), (127, 171819), (153, 142621), (381, 57273), (1123, 19431), (1143, 19091), (2159, 10107), (3369, 6477)]