20739621

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{881}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 13129179

約数列:

[1, 3, 7, 19, 21, 57, 59, 133, 177, 399, 413, 881, 1121, 1239, 2643, 3363, 6167, 7847, 16739, 18501, 23541, 50217, 51979, 117173, 155937, 351519, 363853, 987601, 1091559, 2962803, 6913207, 20739621]

約数ペア:

[(1, 20739621), (3, 6913207), (7, 2962803), (19, 1091559), (21, 987601), (57, 363853), (59, 351519), (133, 155937), (177, 117173), (399, 51979), (413, 50217), (881, 23541), (1121, 18501), (1239, 16739), (2643, 7847), (3363, 6167)]