21360855

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{277}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 35308224

約数和(自身を除く): 13947369

約数列:

[1, 3, 5, 15, 53, 97, 159, 265, 277, 291, 485, 795, 831, 1385, 1455, 4155, 5141, 14681, 15423, 25705, 26869, 44043, 73405, 77115, 80607, 134345, 220215, 403035, 1424057, 4272171, 7120285, 21360855]

約数ペア:

[(1, 21360855), (3, 7120285), (5, 4272171), (15, 1424057), (53, 403035), (97, 220215), (159, 134345), (265, 80607), (277, 77115), (291, 73405), (485, 44043), (795, 26869), (831, 25705), (1385, 15423), (1455, 14681), (4155, 5141)]