21989949

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{283}}^1\times {\mathrm{439}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 29990400

約数和(自身を除く): 8000451

約数列:

[1, 3, 59, 177, 283, 439, 849, 1317, 16697, 25901, 50091, 77703, 124237, 372711, 7329983, 21989949]

約数ペア:

[(1, 21989949), (3, 7329983), (59, 372711), (177, 124237), (283, 77703), (439, 50091), (849, 25901), (1317, 16697)]