20718663

素因数分解:

$3^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{8731}}^1$

素因数の和:8854

約数の個数: 16

約数和(自身を含む): 31854336

約数和(自身を除く): 11135673

約数列:

[1, 3, 7, 21, 113, 339, 791, 2373, 8731, 26193, 61117, 183351, 986603, 2959809, 6906221, 20718663]

約数ペア:

[(1, 20718663), (3, 6906221), (7, 2959809), (21, 986603), (113, 183351), (339, 61117), (791, 26193), (2373, 8731)]