647300163

素因数分解:

$3^1\times {\mathrm{37}}^2\times {\mathrm{397}}^2$

素因数の和:871

約数の個数: 18

約数和(自身を含む): 889263396

約数和(自身を除く): 241963233

約数列:

[1, 3, 37, 111, 397, 1191, 1369, 4107, 14689, 44067, 157609, 472827, 543493, 1630479, 5831533, 17494599, 215766721, 647300163]

約数ペア:

[(1, 647300163), (3, 215766721), (37, 17494599), (111, 5831533), (397, 1630479), (1191, 543493), (1369, 472827), (4107, 157609), (14689, 44067)]