18620987

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 24883200

約数和(自身を除く): 6262213

約数列:

[1, 7, 11, 29, 31, 77, 203, 217, 269, 319, 341, 899, 1883, 2233, 2387, 2959, 6293, 7801, 8339, 9889, 20713, 54607, 58373, 69223, 85811, 91729, 241831, 600677, 642103, 1692817, 2660141, 18620987]

約数ペア:

[(1, 18620987), (7, 2660141), (11, 1692817), (29, 642103), (31, 600677), (77, 241831), (203, 91729), (217, 85811), (269, 69223), (319, 58373), (341, 54607), (899, 20713), (1883, 9889), (2233, 8339), (2387, 7801), (2959, 6293)]