20727651

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51949}}^1$

素因数の和:51978

約数の個数: 16

約数和(自身を含む): 33248000

約数和(自身を除く): 12520349

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51949, 155847, 363643, 987031, 1090929, 2961093, 6909217, 20727651]

約数ペア:

[(1, 20727651), (3, 6909217), (7, 2961093), (19, 1090929), (21, 987031), (57, 363643), (133, 155847), (399, 51949)]