19997557

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{683}}^1$

素因数の和:792

約数の個数: 16

約数和(自身を含む): 22325760

約数和(自身を除く): 2328203

約数列:

[1, 19, 23, 67, 437, 683, 1273, 1541, 12977, 15709, 29279, 45761, 298471, 869459, 1052503, 19997557]

約数ペア:

[(1, 19997557), (19, 1052503), (23, 869459), (67, 298471), (437, 45761), (683, 29279), (1273, 15709), (1541, 12977)]