21181656494

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{7635781}}^1$

素因数の和:7635875

約数の個数: 16

約数和(自身を含む): 33902872080

約数和(自身を除く): 12721215586

約数列:

[1, 2, 19, 38, 73, 146, 1387, 2774, 7635781, 15271562, 145079839, 290159678, 557412013, 1114824026, 10590828247, 21181656494]

約数ペア:

[(1, 21181656494), (2, 10590828247), (19, 1114824026), (38, 557412013), (73, 290159678), (146, 145079839), (1387, 15271562), (2774, 7635781)]