128468571

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{1321}}^1$

素因数の和:1763

約数の個数: 32

約数和(自身を含む): 214227456

約数和(自身を除く): 85758885

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 421, 1263, 1321, 2947, 3963, 4631, 8841, 9247, 13893, 14531, 27741, 32417, 43593, 97251, 101717, 305151, 556141, 1668423, 3892987, 6117551, 11678961, 18352653, 42822857, 128468571]

約数ペア:

[(1, 128468571), (3, 42822857), (7, 18352653), (11, 11678961), (21, 6117551), (33, 3892987), (77, 1668423), (231, 556141), (421, 305151), (1263, 101717), (1321, 97251), (2947, 43593), (3963, 32417), (4631, 27741), (8841, 14531), (9247, 13893)]