21276639

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2357}}^1$

素因数の和:2439

約数の個数: 24

約数和(自身を含む): 33106320

約数和(自身を除く): 11829681

約数列:

[1, 3, 9, 17, 51, 59, 153, 177, 531, 1003, 2357, 3009, 7071, 9027, 21213, 40069, 120207, 139063, 360621, 417189, 1251567, 2364071, 7092213, 21276639]

約数ペア:

[(1, 21276639), (3, 7092213), (9, 2364071), (17, 1251567), (51, 417189), (59, 360621), (153, 139063), (177, 120207), (531, 40069), (1003, 21213), (2357, 9027), (3009, 7071)]